20839580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{317}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 46478880

約数和(自身を除く): 25639300

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 173, 190, 317, 346, 380, 634, 692, 865, 1268, 1585, 1730, 3170, 3287, 3460, 6023, 6340, 6574, 12046, 13148, 16435, 24092, 30115, 32870, 54841, 60230, 65740, 109682, 120460, 219364, 274205, 548410, 1041979, 1096820, 2083958, 4167916, 5209895, 10419790, 20839580]

約数ペア:

[(1, 20839580), (2, 10419790), (4, 5209895), (5, 4167916), (10, 2083958), (19, 1096820), (20, 1041979), (38, 548410), (76, 274205), (95, 219364), (173, 120460), (190, 109682), (317, 65740), (346, 60230), (380, 54841), (634, 32870), (692, 30115), (865, 24092), (1268, 16435), (1585, 13148), (1730, 12046), (3170, 6574), (3287, 6340), (3460, 6023)]