21214028

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{359}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22331572

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 79, 158, 187, 316, 359, 374, 718, 748, 869, 1343, 1436, 1738, 2686, 3476, 3949, 5372, 6103, 7898, 12206, 14773, 15796, 24412, 28361, 29546, 56722, 59092, 67133, 113444, 134266, 268532, 311971, 482137, 623942, 964274, 1247884, 1928548, 5303507, 10607014, 21214028]

約数ペア:

[(1, 21214028), (2, 10607014), (4, 5303507), (11, 1928548), (17, 1247884), (22, 964274), (34, 623942), (44, 482137), (68, 311971), (79, 268532), (158, 134266), (187, 113444), (316, 67133), (359, 59092), (374, 56722), (718, 29546), (748, 28361), (869, 24412), (1343, 15796), (1436, 14773), (1738, 12206), (2686, 7898), (3476, 6103), (3949, 5372)]