1800640000

素因数分解:

$2^9\times 5^4\times {\mathrm{17}}^1\times {\mathrm{331}}^1$

素因数の和:386

約数の個数: 200

約数和(自身を含む): 4774602888

約数和(自身を除く): 2973962888

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 125, 128, 136, 160, 170, 200, 250, 256, 272, 320, 331, 340, 400, 425, 500, 512, 544, 625, 640, 662, 680, 800, 850, 1000, 1088, 1250, 1280, 1324, 1360, 1600, 1655, 1700, 2000, 2125, 2176, 2500, 2560, 2648, 2720, 3200, 3310, 3400, 4000, 4250, 4352, 5000, 5296, 5440, 5627, 6400, 6620, 6800, 8000, 8275, 8500, 8704, 10000, 10592, 10625, 10880, 11254, 12800, 13240, 13600, 16000, 16550, 17000, 20000, 21184, 21250, 21760, 22508, 26480, 27200, 28135, 32000, 33100, 34000, 40000, 41375, 42368, 42500, 43520, 45016, 52960, 54400, 56270, 64000, 66200, 68000, 80000, 82750, 84736, 85000, 90032, 105920, 108800, 112540, 132400, 136000, 140675, 160000, 165500, 169472, 170000, 180064, 206875, 211840, 217600, 225080, 264800, 272000, 281350, 320000, 331000, 340000, 360128, 413750, 423680, 450160, 529600, 544000, 562700, 662000, 680000, 703375, 720256, 827500, 847360, 900320, 1059200, 1088000, 1125400, 1324000, 1360000, 1406750, 1440512, 1655000, 1800640, 2118400, 2250800, 2648000, 2720000, 2813500, 2881024, 3310000, 3516875, 3601280, 4236800, 4501600, 5296000, 5440000, 5627000, 6620000, 7033750, 7202560, 9003200, 10592000, 11254000, 13240000, 14067500, 14405120, 18006400, 21184000, 22508000, 26480000, 28135000, 36012800, 45016000, 52960000, 56270000, 72025600, 90032000, 105920000, 112540000, 180064000, 225080000, 360128000, 450160000, 900320000, 1800640000]

約数ペア:

[(1, 1800640000), (2, 900320000), (4, 450160000), (5, 360128000), (8, 225080000), (10, 180064000), (16, 112540000), (17, 105920000), (20, 90032000), (25, 72025600), (32, 56270000), (34, 52960000), (40, 45016000), (50, 36012800), (64, 28135000), (68, 26480000), (80, 22508000), (85, 21184000), (100, 18006400), (125, 14405120), (128, 14067500), (136, 13240000), (160, 11254000), (170, 10592000), (200, 9003200), (250, 7202560), (256, 7033750), (272, 6620000), (320, 5627000), (331, 5440000), (340, 5296000), (400, 4501600), (425, 4236800), (500, 3601280), (512, 3516875), (544, 3310000), (625, 2881024), (640, 2813500), (662, 2720000), (680, 2648000), (800, 2250800), (850, 2118400), (1000, 1800640), (1088, 1655000), (1250, 1440512), (1280, 1406750), (1324, 1360000), (1360, 1324000), (1600, 1125400), (1655, 1088000), (1700, 1059200), (2000, 900320), (2125, 847360), (2176, 827500), (2500, 720256), (2560, 703375), (2648, 680000), (2720, 662000), (3200, 562700), (3310, 544000), (3400, 529600), (4000, 450160), (4250, 423680), (4352, 413750), (5000, 360128), (5296, 340000), (5440, 331000), (5627, 320000), (6400, 281350), (6620, 272000), (6800, 264800), (8000, 225080), (8275, 217600), (8500, 211840), (8704, 206875), (10000, 180064), (10592, 170000), (10625, 169472), (10880, 165500), (11254, 160000), (12800, 140675), (13240, 136000), (13600, 132400), (16000, 112540), (16550, 108800), (17000, 105920), (20000, 90032), (21184, 85000), (21250, 84736), (21760, 82750), (22508, 80000), (26480, 68000), (27200, 66200), (28135, 64000), (32000, 56270), (33100, 54400), (34000, 52960), (40000, 45016), (41375, 43520), (42368, 42500)]