15811960

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 37778400

約数和(自身を除く): 21966440

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 43, 58, 86, 116, 145, 172, 215, 232, 290, 317, 344, 430, 580, 634, 860, 1160, 1247, 1268, 1585, 1720, 2494, 2536, 3170, 4988, 6235, 6340, 9193, 9976, 12470, 12680, 13631, 18386, 24940, 27262, 36772, 45965, 49880, 54524, 68155, 73544, 91930, 109048, 136310, 183860, 272620, 367720, 395299, 545240, 790598, 1581196, 1976495, 3162392, 3952990, 7905980, 15811960]

約数ペア:

[(1, 15811960), (2, 7905980), (4, 3952990), (5, 3162392), (8, 1976495), (10, 1581196), (20, 790598), (29, 545240), (40, 395299), (43, 367720), (58, 272620), (86, 183860), (116, 136310), (145, 109048), (172, 91930), (215, 73544), (232, 68155), (290, 54524), (317, 49880), (344, 45965), (430, 36772), (580, 27262), (634, 24940), (860, 18386), (1160, 13631), (1247, 12680), (1268, 12470), (1585, 9976), (1720, 9193), (2494, 6340), (2536, 6235), (3170, 4988)]