28947685

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 42086016

約数和(自身を除く): 13138331

約数列:

[1, 5, 13, 17, 23, 65, 67, 85, 115, 221, 289, 299, 335, 391, 871, 1105, 1139, 1445, 1495, 1541, 1955, 3757, 4355, 5083, 5695, 6647, 7705, 14807, 18785, 19363, 20033, 25415, 26197, 33235, 74035, 86411, 96815, 100165, 130985, 251719, 340561, 432055, 445349, 1258595, 1702805, 2226745, 5789537, 28947685]

約数ペア:

[(1, 28947685), (5, 5789537), (13, 2226745), (17, 1702805), (23, 1258595), (65, 445349), (67, 432055), (85, 340561), (115, 251719), (221, 130985), (289, 100165), (299, 96815), (335, 86411), (391, 74035), (871, 33235), (1105, 26197), (1139, 25415), (1445, 20033), (1495, 19363), (1541, 18785), (1955, 14807), (3757, 7705), (4355, 6647), (5083, 5695)]