21563568

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{11519}}^1$

素因数の和:11546

約数の個数: 60

約数和(自身を含む): 64995840

約数和(自身を除く): 43432272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 11519, 23038, 34557, 46076, 69114, 92152, 103671, 138228, 149747, 184304, 207342, 276456, 299494, 414684, 449241, 552912, 598988, 829368, 898482, 1197976, 1347723, 1658736, 1796964, 2395952, 2695446, 3593928, 5390892, 7187856, 10781784, 21563568]

約数ペア:

[(1, 21563568), (2, 10781784), (3, 7187856), (4, 5390892), (6, 3593928), (8, 2695446), (9, 2395952), (12, 1796964), (13, 1658736), (16, 1347723), (18, 1197976), (24, 898482), (26, 829368), (36, 598988), (39, 552912), (48, 449241), (52, 414684), (72, 299494), (78, 276456), (104, 207342), (117, 184304), (144, 149747), (156, 138228), (208, 103671), (234, 92152), (312, 69114), (468, 46076), (624, 34557), (936, 23038), (1872, 11519)]