25209980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1399}}^1$

素因数の和:1478

約数の個数: 48

約数和(自身を含む): 57153600

約数和(自身を除く): 31943620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 1060, 1399, 1802, 2798, 3604, 4505, 5596, 6995, 9010, 13990, 18020, 23783, 27980, 47566, 74147, 95132, 118915, 148294, 237830, 296588, 370735, 475660, 741470, 1260499, 1482940, 2520998, 5041996, 6302495, 12604990, 25209980]

約数ペア:

[(1, 25209980), (2, 12604990), (4, 6302495), (5, 5041996), (10, 2520998), (17, 1482940), (20, 1260499), (34, 741470), (53, 475660), (68, 370735), (85, 296588), (106, 237830), (170, 148294), (212, 118915), (265, 95132), (340, 74147), (530, 47566), (901, 27980), (1060, 23783), (1399, 18020), (1802, 13990), (2798, 9010), (3604, 6995), (4505, 5596)]