21804160

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:214

約数の個数: 128

約数和(自身を含む): 61885440

約数和(自身を除く): 40081280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 157, 160, 217, 224, 248, 280, 310, 314, 320, 434, 448, 496, 560, 620, 628, 640, 785, 868, 896, 992, 1085, 1099, 1120, 1240, 1256, 1570, 1736, 1984, 2170, 2198, 2240, 2480, 2512, 3140, 3472, 3968, 4340, 4396, 4480, 4867, 4960, 5024, 5495, 6280, 6944, 8680, 8792, 9734, 9920, 10048, 10990, 12560, 13888, 17360, 17584, 19468, 19840, 20096, 21980, 24335, 25120, 27776, 34069, 34720, 35168, 38936, 43960, 48670, 50240, 68138, 69440, 70336, 77872, 87920, 97340, 100480, 136276, 138880, 140672, 155744, 170345, 175840, 194680, 272552, 311488, 340690, 351680, 389360, 545104, 622976, 681380, 703360, 778720, 1090208, 1362760, 1557440, 2180416, 2725520, 3114880, 4360832, 5451040, 10902080, 21804160]

約数ペア:

[(1, 21804160), (2, 10902080), (4, 5451040), (5, 4360832), (7, 3114880), (8, 2725520), (10, 2180416), (14, 1557440), (16, 1362760), (20, 1090208), (28, 778720), (31, 703360), (32, 681380), (35, 622976), (40, 545104), (56, 389360), (62, 351680), (64, 340690), (70, 311488), (80, 272552), (112, 194680), (124, 175840), (128, 170345), (140, 155744), (155, 140672), (157, 138880), (160, 136276), (217, 100480), (224, 97340), (248, 87920), (280, 77872), (310, 70336), (314, 69440), (320, 68138), (434, 50240), (448, 48670), (496, 43960), (560, 38936), (620, 35168), (628, 34720), (640, 34069), (785, 27776), (868, 25120), (896, 24335), (992, 21980), (1085, 20096), (1099, 19840), (1120, 19468), (1240, 17584), (1256, 17360), (1570, 13888), (1736, 12560), (1984, 10990), (2170, 10048), (2198, 9920), (2240, 9734), (2480, 8792), (2512, 8680), (3140, 6944), (3472, 6280), (3968, 5495), (4340, 5024), (4396, 4960), (4480, 4867)]