216550

素因数分解:

$2^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:144

約数の個数: 24

約数和(自身を含む): 415152

約数和(自身を除く): 198602

約数列:

[1, 2, 5, 10, 25, 50, 61, 71, 122, 142, 305, 355, 610, 710, 1525, 1775, 3050, 3550, 4331, 8662, 21655, 43310, 108275, 216550]

約数ペア:

[(1, 216550), (2, 108275), (5, 43310), (10, 21655), (25, 8662), (50, 4331), (61, 3550), (71, 3050), (122, 1775), (142, 1525), (305, 710), (355, 610)]