20897310

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:729

約数の個数: 64

約数和(自身を含む): 57729024

約数和(自身を除く): 36831714

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 191, 210, 382, 521, 573, 955, 1042, 1146, 1337, 1563, 1910, 2605, 2674, 2865, 3126, 3647, 4011, 5210, 5730, 6685, 7294, 7815, 8022, 10941, 13370, 15630, 18235, 20055, 21882, 36470, 40110, 54705, 99511, 109410, 199022, 298533, 497555, 597066, 696577, 995110, 1393154, 1492665, 2089731, 2985330, 3482885, 4179462, 6965770, 10448655, 20897310]

約数ペア:

[(1, 20897310), (2, 10448655), (3, 6965770), (5, 4179462), (6, 3482885), (7, 2985330), (10, 2089731), (14, 1492665), (15, 1393154), (21, 995110), (30, 696577), (35, 597066), (42, 497555), (70, 298533), (105, 199022), (191, 109410), (210, 99511), (382, 54705), (521, 40110), (573, 36470), (955, 21882), (1042, 20055), (1146, 18235), (1337, 15630), (1563, 13370), (1910, 10941), (2605, 8022), (2674, 7815), (2865, 7294), (3126, 6685), (3647, 5730), (4011, 5210)]