15455980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 33981696

約数和(自身を除く): 18525716

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 97, 124, 155, 194, 257, 310, 388, 485, 514, 620, 970, 1028, 1285, 1940, 2570, 3007, 5140, 6014, 7967, 12028, 15035, 15934, 24929, 30070, 31868, 39835, 49858, 60140, 79670, 99716, 124645, 159340, 249290, 498580, 772799, 1545598, 3091196, 3863995, 7727990, 15455980]

約数ペア:

[(1, 15455980), (2, 7727990), (4, 3863995), (5, 3091196), (10, 1545598), (20, 772799), (31, 498580), (62, 249290), (97, 159340), (124, 124645), (155, 99716), (194, 79670), (257, 60140), (310, 49858), (388, 39835), (485, 31868), (514, 30070), (620, 24929), (970, 15934), (1028, 15035), (1285, 12028), (1940, 7967), (2570, 6014), (3007, 5140)]