399202375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{971}}^1$

素因数の和:1033

約数の個数: 64

約数和(自身を含む): 611380224

約数和(自身を除く): 212177849

約数列:

[1, 5, 11, 13, 23, 25, 55, 65, 115, 125, 143, 253, 275, 299, 325, 575, 715, 971, 1265, 1375, 1495, 1625, 2875, 3289, 3575, 4855, 6325, 7475, 10681, 12623, 16445, 17875, 22333, 24275, 31625, 37375, 53405, 63115, 82225, 111665, 121375, 138853, 245663, 267025, 290329, 315575, 411125, 558325, 694265, 1228315, 1335125, 1451645, 1577875, 2791625, 3193619, 3471325, 6141575, 7258225, 15968095, 17356625, 30707875, 36291125, 79840475, 399202375]

約数ペア:

[(1, 399202375), (5, 79840475), (11, 36291125), (13, 30707875), (23, 17356625), (25, 15968095), (55, 7258225), (65, 6141575), (115, 3471325), (125, 3193619), (143, 2791625), (253, 1577875), (275, 1451645), (299, 1335125), (325, 1228315), (575, 694265), (715, 558325), (971, 411125), (1265, 315575), (1375, 290329), (1495, 267025), (1625, 245663), (2875, 138853), (3289, 121375), (3575, 111665), (4855, 82225), (6325, 63115), (7475, 53405), (10681, 37375), (12623, 31625), (16445, 24275), (17875, 22333)]