21626250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:177

約数の個数: 80

約数和(自身を含む): 55482240

約数和(自身を除く): 33855990

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 73, 75, 79, 125, 146, 150, 158, 219, 237, 250, 365, 375, 395, 438, 474, 625, 730, 750, 790, 1095, 1185, 1250, 1825, 1875, 1975, 2190, 2370, 3650, 3750, 3950, 5475, 5767, 5925, 9125, 9875, 10950, 11534, 11850, 17301, 18250, 19750, 27375, 28835, 29625, 34602, 45625, 49375, 54750, 57670, 59250, 86505, 91250, 98750, 136875, 144175, 148125, 173010, 273750, 288350, 296250, 432525, 720875, 865050, 1441750, 2162625, 3604375, 4325250, 7208750, 10813125, 21626250]

約数ペア:

[(1, 21626250), (2, 10813125), (3, 7208750), (5, 4325250), (6, 3604375), (10, 2162625), (15, 1441750), (25, 865050), (30, 720875), (50, 432525), (73, 296250), (75, 288350), (79, 273750), (125, 173010), (146, 148125), (150, 144175), (158, 136875), (219, 98750), (237, 91250), (250, 86505), (365, 59250), (375, 57670), (395, 54750), (438, 49375), (474, 45625), (625, 34602), (730, 29625), (750, 28835), (790, 27375), (1095, 19750), (1185, 18250), (1250, 17301), (1825, 11850), (1875, 11534), (1975, 10950), (2190, 9875), (2370, 9125), (3650, 5925), (3750, 5767), (3950, 5475)]