19696625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:99

約数の個数: 64

約数和(自身を含む): 30191616

約数和(自身を除く): 10494991

約数列:

[1, 5, 13, 17, 23, 25, 31, 65, 85, 115, 125, 155, 221, 299, 325, 391, 403, 425, 527, 575, 713, 775, 1105, 1495, 1625, 1955, 2015, 2125, 2635, 2875, 3565, 3875, 5083, 5525, 6851, 7475, 9269, 9775, 10075, 12121, 13175, 17825, 25415, 27625, 34255, 37375, 46345, 48875, 50375, 60605, 65875, 89125, 127075, 157573, 171275, 231725, 303025, 635375, 787865, 856375, 1158625, 1515125, 3939325, 19696625]

約数ペア:

[(1, 19696625), (5, 3939325), (13, 1515125), (17, 1158625), (23, 856375), (25, 787865), (31, 635375), (65, 303025), (85, 231725), (115, 171275), (125, 157573), (155, 127075), (221, 89125), (299, 65875), (325, 60605), (391, 50375), (403, 48875), (425, 46345), (527, 37375), (575, 34255), (713, 27625), (775, 25415), (1105, 17825), (1495, 13175), (1625, 12121), (1955, 10075), (2015, 9775), (2125, 9269), (2635, 7475), (2875, 6851), (3565, 5525), (3875, 5083)]