18509728

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{397}}^1$

素因数の和:485

約数の個数: 48

約数和(自身を含む): 38513664

約数和(自身を除く): 20003936

約数列:

[1, 2, 4, 8, 16, 31, 32, 47, 62, 94, 124, 188, 248, 376, 397, 496, 752, 794, 992, 1457, 1504, 1588, 2914, 3176, 5828, 6352, 11656, 12307, 12704, 18659, 23312, 24614, 37318, 46624, 49228, 74636, 98456, 149272, 196912, 298544, 393824, 578429, 597088, 1156858, 2313716, 4627432, 9254864, 18509728]

約数ペア:

[(1, 18509728), (2, 9254864), (4, 4627432), (8, 2313716), (16, 1156858), (31, 597088), (32, 578429), (47, 393824), (62, 298544), (94, 196912), (124, 149272), (188, 98456), (248, 74636), (376, 49228), (397, 46624), (496, 37318), (752, 24614), (794, 23312), (992, 18659), (1457, 12704), (1504, 12307), (1588, 11656), (2914, 6352), (3176, 5828)]