290385940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{1621}}^1$

素因数の和:1709

約数の個数: 72

約数和(自身を含む): 673201368

約数和(自身を除く): 382815428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 169, 212, 260, 265, 338, 530, 676, 689, 845, 1060, 1378, 1621, 1690, 2756, 3242, 3380, 3445, 6484, 6890, 8105, 8957, 13780, 16210, 17914, 21073, 32420, 35828, 42146, 44785, 84292, 85913, 89570, 105365, 171826, 179140, 210730, 273949, 343652, 421460, 429565, 547898, 859130, 1095796, 1116869, 1369745, 1718260, 2233738, 2739490, 4467476, 5478980, 5584345, 11168690, 14519297, 22337380, 29038594, 58077188, 72596485, 145192970, 290385940]

約数ペア:

[(1, 290385940), (2, 145192970), (4, 72596485), (5, 58077188), (10, 29038594), (13, 22337380), (20, 14519297), (26, 11168690), (52, 5584345), (53, 5478980), (65, 4467476), (106, 2739490), (130, 2233738), (169, 1718260), (212, 1369745), (260, 1116869), (265, 1095796), (338, 859130), (530, 547898), (676, 429565), (689, 421460), (845, 343652), (1060, 273949), (1378, 210730), (1621, 179140), (1690, 171826), (2756, 105365), (3242, 89570), (3380, 85913), (3445, 84292), (6484, 44785), (6890, 42146), (8105, 35828), (8957, 32420), (13780, 21073), (16210, 17914)]