21802672

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:541

約数の個数: 40

約数和(自身を含む): 44104320

約数和(自身を除く): 22301648

約数列:

[1, 2, 4, 8, 16, 31, 62, 113, 124, 226, 248, 389, 452, 496, 778, 904, 1556, 1808, 3112, 3503, 6224, 7006, 12059, 14012, 24118, 28024, 43957, 48236, 56048, 87914, 96472, 175828, 192944, 351656, 703312, 1362667, 2725334, 5450668, 10901336, 21802672]

約数ペア:

[(1, 21802672), (2, 10901336), (4, 5450668), (8, 2725334), (16, 1362667), (31, 703312), (62, 351656), (113, 192944), (124, 175828), (226, 96472), (248, 87914), (389, 56048), (452, 48236), (496, 43957), (778, 28024), (904, 24118), (1556, 14012), (1808, 12059), (3112, 7006), (3503, 6224)]