21463540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8069}}^1$

素因数の和:8104

約数の個数: 48

約数和(自身を含む): 54230400

約数和(自身を除く): 32766860

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8069, 16138, 32276, 40345, 56483, 80690, 112966, 153311, 161380, 225932, 282415, 306622, 564830, 613244, 766555, 1073177, 1129660, 1533110, 2146354, 3066220, 4292708, 5365885, 10731770, 21463540]

約数ペア:

[(1, 21463540), (2, 10731770), (4, 5365885), (5, 4292708), (7, 3066220), (10, 2146354), (14, 1533110), (19, 1129660), (20, 1073177), (28, 766555), (35, 613244), (38, 564830), (70, 306622), (76, 282415), (95, 225932), (133, 161380), (140, 153311), (190, 112966), (266, 80690), (380, 56483), (532, 40345), (665, 32276), (1330, 16138), (2660, 8069)]