21136700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 50309280

約数和(自身を除く): 29172580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 229, 260, 284, 325, 355, 458, 650, 710, 916, 923, 1145, 1300, 1420, 1775, 1846, 2290, 2977, 3550, 3692, 4580, 4615, 5725, 5954, 7100, 9230, 11450, 11908, 14885, 16259, 18460, 22900, 23075, 29770, 32518, 46150, 59540, 65036, 74425, 81295, 92300, 148850, 162590, 211367, 297700, 325180, 406475, 422734, 812950, 845468, 1056835, 1625900, 2113670, 4227340, 5284175, 10568350, 21136700]

約数ペア:

[(1, 21136700), (2, 10568350), (4, 5284175), (5, 4227340), (10, 2113670), (13, 1625900), (20, 1056835), (25, 845468), (26, 812950), (50, 422734), (52, 406475), (65, 325180), (71, 297700), (100, 211367), (130, 162590), (142, 148850), (229, 92300), (260, 81295), (284, 74425), (325, 65036), (355, 59540), (458, 46150), (650, 32518), (710, 29770), (916, 23075), (923, 22900), (1145, 18460), (1300, 16259), (1420, 14885), (1775, 11908), (1846, 11450), (2290, 9230), (2977, 7100), (3550, 5954), (3692, 5725), (4580, 4615)]