21967925

素因数分解:

$5^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:330

約数の個数: 36

約数和(自身を含む): 32230080

約数和(自身を除く): 10262155

約数列:

[1, 5, 7, 25, 35, 49, 79, 175, 227, 245, 395, 553, 1135, 1225, 1589, 1975, 2765, 3871, 5675, 7945, 11123, 13825, 17933, 19355, 39725, 55615, 89665, 96775, 125531, 278075, 448325, 627655, 878717, 3138275, 4393585, 21967925]

約数ペア:

[(1, 21967925), (5, 4393585), (7, 3138275), (25, 878717), (35, 627655), (49, 448325), (79, 278075), (175, 125531), (227, 96775), (245, 89665), (395, 55615), (553, 39725), (1135, 19355), (1225, 17933), (1589, 13825), (1975, 11123), (2765, 7945), (3871, 5675)]