18757120

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1$

素因数の和:471

約数の個数: 80

約数和(自身を含む): 47729088

約数和(自身を除く): 28971968

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 431, 512, 544, 640, 680, 862, 1088, 1280, 1360, 1724, 2155, 2176, 2560, 2720, 3448, 4310, 4352, 5440, 6896, 7327, 8620, 8704, 10880, 13792, 14654, 17240, 21760, 27584, 29308, 34480, 36635, 43520, 55168, 58616, 68960, 73270, 110336, 117232, 137920, 146540, 220672, 234464, 275840, 293080, 468928, 551680, 586160, 937856, 1103360, 1172320, 1875712, 2344640, 3751424, 4689280, 9378560, 18757120]

約数ペア:

[(1, 18757120), (2, 9378560), (4, 4689280), (5, 3751424), (8, 2344640), (10, 1875712), (16, 1172320), (17, 1103360), (20, 937856), (32, 586160), (34, 551680), (40, 468928), (64, 293080), (68, 275840), (80, 234464), (85, 220672), (128, 146540), (136, 137920), (160, 117232), (170, 110336), (256, 73270), (272, 68960), (320, 58616), (340, 55168), (431, 43520), (512, 36635), (544, 34480), (640, 29308), (680, 27584), (862, 21760), (1088, 17240), (1280, 14654), (1360, 13792), (1724, 10880), (2155, 8704), (2176, 8620), (2560, 7327), (2720, 6896), (3448, 5440), (4310, 4352)]