18626740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:253

約数の個数: 72

約数和(自身を含む): 44241120

約数和(自身を除く): 25614380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 121, 172, 179, 215, 220, 242, 358, 430, 473, 484, 605, 716, 860, 895, 946, 1210, 1790, 1892, 1969, 2365, 2420, 3580, 3938, 4730, 5203, 7697, 7876, 9460, 9845, 10406, 15394, 19690, 20812, 21659, 26015, 30788, 38485, 39380, 43318, 52030, 76970, 84667, 86636, 104060, 108295, 153940, 169334, 216590, 338668, 423335, 433180, 846670, 931337, 1693340, 1862674, 3725348, 4656685, 9313370, 18626740]

約数ペア:

[(1, 18626740), (2, 9313370), (4, 4656685), (5, 3725348), (10, 1862674), (11, 1693340), (20, 931337), (22, 846670), (43, 433180), (44, 423335), (55, 338668), (86, 216590), (110, 169334), (121, 153940), (172, 108295), (179, 104060), (215, 86636), (220, 84667), (242, 76970), (358, 52030), (430, 43318), (473, 39380), (484, 38485), (605, 30788), (716, 26015), (860, 21659), (895, 20812), (946, 19690), (1210, 15394), (1790, 10406), (1892, 9845), (1969, 9460), (2365, 7876), (2420, 7697), (3580, 5203), (3938, 4730)]