21413925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7321}}^1$

素因数の和:7350

約数の個数: 36

約数和(自身を含む): 41310724

約数和(自身を除く): 19896799

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7321, 21963, 36605, 65889, 95173, 109815, 183025, 285519, 329445, 475865, 549075, 856557, 1427595, 1647225, 2379325, 4282785, 7137975, 21413925]

約数ペア:

[(1, 21413925), (3, 7137975), (5, 4282785), (9, 2379325), (13, 1647225), (15, 1427595), (25, 856557), (39, 549075), (45, 475865), (65, 329445), (75, 285519), (117, 183025), (195, 109815), (225, 95173), (325, 65889), (585, 36605), (975, 21963), (2925, 7321)]