13209550

素因数分解:

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

素因数の和:205

約数の個数: 36

約数和(自身を含む): 25330968

約数和(自身を除く): 12121418

約数列:

[1, 2, 5, 10, 25, 50, 61, 71, 122, 142, 305, 355, 610, 710, 1525, 1775, 3050, 3550, 3721, 4331, 7442, 8662, 18605, 21655, 37210, 43310, 93025, 108275, 186050, 216550, 264191, 528382, 1320955, 2641910, 6604775, 13209550]

約数ペア:

[(1, 13209550), (2, 6604775), (5, 2641910), (10, 1320955), (25, 528382), (50, 264191), (61, 216550), (71, 186050), (122, 108275), (142, 93025), (305, 43310), (355, 37210), (610, 21655), (710, 18605), (1525, 8662), (1775, 7442), (3050, 4331), (3550, 3721)]