21719730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 54172800

約数和(自身を除く): 32453070

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 113, 129, 149, 215, 226, 258, 298, 339, 430, 447, 565, 645, 678, 745, 894, 1130, 1290, 1490, 1695, 2235, 3390, 4470, 4859, 6407, 9718, 12814, 14577, 16837, 19221, 24295, 29154, 32035, 33674, 38442, 48590, 50511, 64070, 72885, 84185, 96105, 101022, 145770, 168370, 192210, 252555, 505110, 723991, 1447982, 2171973, 3619955, 4343946, 7239910, 10859865, 21719730]

約数ペア:

[(1, 21719730), (2, 10859865), (3, 7239910), (5, 4343946), (6, 3619955), (10, 2171973), (15, 1447982), (30, 723991), (43, 505110), (86, 252555), (113, 192210), (129, 168370), (149, 145770), (215, 101022), (226, 96105), (258, 84185), (298, 72885), (339, 64070), (430, 50511), (447, 48590), (565, 38442), (645, 33674), (678, 32035), (745, 29154), (894, 24295), (1130, 19221), (1290, 16837), (1490, 14577), (1695, 12814), (2235, 9718), (3390, 6407), (4470, 4859)]