20853625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:382

約数の個数: 32

約数和(自身を含む): 28802592

約数和(自身を除く): 7948967

約数列:

[1, 5, 13, 25, 41, 65, 125, 205, 313, 325, 533, 1025, 1565, 1625, 2665, 4069, 5125, 7825, 12833, 13325, 20345, 39125, 64165, 66625, 101725, 166829, 320825, 508625, 834145, 1604125, 4170725, 20853625]

約数ペア:

[(1, 20853625), (5, 4170725), (13, 1604125), (25, 834145), (41, 508625), (65, 320825), (125, 166829), (205, 101725), (313, 66625), (325, 64165), (533, 39125), (1025, 20345), (1565, 13325), (1625, 12833), (2665, 7825), (4069, 5125)]