21471824

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6421}}^1$

素因数の和:6459

約数の個数: 40

約数和(自身を含む): 47779680

約数和(自身を除く): 26307856

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 152, 176, 209, 304, 418, 836, 1672, 3344, 6421, 12842, 25684, 51368, 70631, 102736, 121999, 141262, 243998, 282524, 487996, 565048, 975992, 1130096, 1341989, 1951984, 2683978, 5367956, 10735912, 21471824]

約数ペア:

[(1, 21471824), (2, 10735912), (4, 5367956), (8, 2683978), (11, 1951984), (16, 1341989), (19, 1130096), (22, 975992), (38, 565048), (44, 487996), (76, 282524), (88, 243998), (152, 141262), (176, 121999), (209, 102736), (304, 70631), (418, 51368), (836, 25684), (1672, 12842), (3344, 6421)]