21371276

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 41717760

約数和(自身を除く): 20346484

約数列:

[1, 2, 4, 19, 31, 38, 47, 62, 76, 94, 124, 188, 193, 386, 589, 772, 893, 1178, 1457, 1786, 2356, 2914, 3572, 3667, 5828, 5983, 7334, 9071, 11966, 14668, 18142, 23932, 27683, 36284, 55366, 110732, 113677, 172349, 227354, 281201, 344698, 454708, 562402, 689396, 1124804, 5342819, 10685638, 21371276]

約数ペア:

[(1, 21371276), (2, 10685638), (4, 5342819), (19, 1124804), (31, 689396), (38, 562402), (47, 454708), (62, 344698), (76, 281201), (94, 227354), (124, 172349), (188, 113677), (193, 110732), (386, 55366), (589, 36284), (772, 27683), (893, 23932), (1178, 18142), (1457, 14668), (1786, 11966), (2356, 9071), (2914, 7334), (3572, 5983), (3667, 5828)]