21274832

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1489}}^1$

素因数の和:1563

約数の個数: 40

約数和(自身を含む): 44342400

約数和(自身を除く): 23067568

約数列:

[1, 2, 4, 8, 16, 19, 38, 47, 76, 94, 152, 188, 304, 376, 752, 893, 1489, 1786, 2978, 3572, 5956, 7144, 11912, 14288, 23824, 28291, 56582, 69983, 113164, 139966, 226328, 279932, 452656, 559864, 1119728, 1329677, 2659354, 5318708, 10637416, 21274832]

約数ペア:

[(1, 21274832), (2, 10637416), (4, 5318708), (8, 2659354), (16, 1329677), (19, 1119728), (38, 559864), (47, 452656), (76, 279932), (94, 226328), (152, 139966), (188, 113164), (304, 69983), (376, 56582), (752, 28291), (893, 23824), (1489, 14288), (1786, 11912), (2978, 7144), (3572, 5956)]