21765315

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 41771520

約数和(自身を除く): 20006205

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 73, 139, 143, 165, 195, 219, 365, 417, 429, 695, 715, 803, 949, 1095, 1529, 1807, 2085, 2145, 2409, 2847, 4015, 4587, 4745, 5421, 7645, 9035, 10147, 10439, 12045, 14235, 19877, 22935, 27105, 30441, 31317, 50735, 52195, 59631, 99385, 111617, 131911, 152205, 156585, 298155, 334851, 395733, 558085, 659555, 1451021, 1674255, 1978665, 4353063, 7255105, 21765315]

約数ペア:

[(1, 21765315), (3, 7255105), (5, 4353063), (11, 1978665), (13, 1674255), (15, 1451021), (33, 659555), (39, 558085), (55, 395733), (65, 334851), (73, 298155), (139, 156585), (143, 152205), (165, 131911), (195, 111617), (219, 99385), (365, 59631), (417, 52195), (429, 50735), (695, 31317), (715, 30441), (803, 27105), (949, 22935), (1095, 19877), (1529, 14235), (1807, 12045), (2085, 10439), (2145, 10147), (2409, 9035), (2847, 7645), (4015, 5421), (4587, 4745)]