16961780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:237

約数の個数: 72

約数和(自身を含む): 40308576

約数和(自身を除く): 23346796

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 121, 163, 172, 215, 220, 242, 326, 430, 473, 484, 605, 652, 815, 860, 946, 1210, 1630, 1793, 1892, 2365, 2420, 3260, 3586, 4730, 5203, 7009, 7172, 8965, 9460, 10406, 14018, 17930, 19723, 20812, 26015, 28036, 35045, 35860, 39446, 52030, 70090, 77099, 78892, 98615, 104060, 140180, 154198, 197230, 308396, 385495, 394460, 770990, 848089, 1541980, 1696178, 3392356, 4240445, 8480890, 16961780]

約数ペア:

[(1, 16961780), (2, 8480890), (4, 4240445), (5, 3392356), (10, 1696178), (11, 1541980), (20, 848089), (22, 770990), (43, 394460), (44, 385495), (55, 308396), (86, 197230), (110, 154198), (121, 140180), (163, 104060), (172, 98615), (215, 78892), (220, 77099), (242, 70090), (326, 52030), (430, 39446), (473, 35860), (484, 35045), (605, 28036), (652, 26015), (815, 20812), (860, 19723), (946, 17930), (1210, 14018), (1630, 10406), (1793, 9460), (1892, 8965), (2365, 7172), (2420, 7009), (3260, 5203), (3586, 4730)]