21306180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7247}}^1$

素因数の和:7273

約数の個数: 72

約数和(自身を含む): 69406848

約数和(自身を除く): 48100668

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7247, 14494, 21741, 28988, 36235, 43482, 50729, 72470, 86964, 101458, 108705, 144940, 152187, 202916, 217410, 253645, 304374, 355103, 434820, 507290, 608748, 710206, 760935, 1014580, 1065309, 1420412, 1521870, 1775515, 2130618, 3043740, 3551030, 4261236, 5326545, 7102060, 10653090, 21306180]

約数ペア:

[(1, 21306180), (2, 10653090), (3, 7102060), (4, 5326545), (5, 4261236), (6, 3551030), (7, 3043740), (10, 2130618), (12, 1775515), (14, 1521870), (15, 1420412), (20, 1065309), (21, 1014580), (28, 760935), (30, 710206), (35, 608748), (42, 507290), (49, 434820), (60, 355103), (70, 304374), (84, 253645), (98, 217410), (105, 202916), (140, 152187), (147, 144940), (196, 108705), (210, 101458), (245, 86964), (294, 72470), (420, 50729), (490, 43482), (588, 36235), (735, 28988), (980, 21741), (1470, 14494), (2940, 7247)]