18805375

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 25399296

約数和(自身を除く): 6593921

約数列:

[1, 5, 23, 25, 31, 115, 125, 155, 211, 575, 713, 775, 1055, 2875, 3565, 3875, 4853, 5275, 6541, 17825, 24265, 26375, 32705, 89125, 121325, 150443, 163525, 606625, 752215, 817625, 3761075, 18805375]

約数ペア:

[(1, 18805375), (5, 3761075), (23, 817625), (25, 752215), (31, 606625), (115, 163525), (125, 150443), (155, 121325), (211, 89125), (575, 32705), (713, 26375), (775, 24265), (1055, 17825), (2875, 6541), (3565, 5275), (3875, 4853)]