81601312

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:306

約数の個数: 72

約数和(自身を含む): 177085440

約数和(自身を除く): 95484128

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 79, 104, 158, 169, 191, 208, 316, 338, 382, 416, 632, 676, 764, 1027, 1264, 1352, 1528, 2054, 2483, 2528, 2704, 3056, 4108, 4966, 5408, 6112, 8216, 9932, 13351, 15089, 16432, 19864, 26702, 30178, 32279, 32864, 39728, 53404, 60356, 64558, 79456, 106808, 120712, 129116, 196157, 213616, 241424, 258232, 392314, 427232, 482848, 516464, 784628, 1032928, 1569256, 2550041, 3138512, 5100082, 6277024, 10200164, 20400328, 40800656, 81601312]

約数ペア:

[(1, 81601312), (2, 40800656), (4, 20400328), (8, 10200164), (13, 6277024), (16, 5100082), (26, 3138512), (32, 2550041), (52, 1569256), (79, 1032928), (104, 784628), (158, 516464), (169, 482848), (191, 427232), (208, 392314), (316, 258232), (338, 241424), (382, 213616), (416, 196157), (632, 129116), (676, 120712), (764, 106808), (1027, 79456), (1264, 64558), (1352, 60356), (1528, 53404), (2054, 39728), (2483, 32864), (2528, 32279), (2704, 30178), (3056, 26702), (4108, 19864), (4966, 16432), (5408, 15089), (6112, 13351), (8216, 9932)]