18182316400

素因数分解:

$2^4\times 5^2\times {\mathrm{421}}^1\times {\mathrm{107971}}^1$

素因数の和:108410

約数の個数: 60

約数和(自身を含む): 43787180824

約数和(自身を除く): 25604864424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 421, 842, 1684, 2105, 3368, 4210, 6736, 8420, 10525, 16840, 21050, 33680, 42100, 84200, 107971, 168400, 215942, 431884, 539855, 863768, 1079710, 1727536, 2159420, 2699275, 4318840, 5398550, 8637680, 10797100, 21594200, 43188400, 45455791, 90911582, 181823164, 227278955, 363646328, 454557910, 727292656, 909115820, 1136394775, 1818231640, 2272789550, 3636463280, 4545579100, 9091158200, 18182316400]

約数ペア:

[(1, 18182316400), (2, 9091158200), (4, 4545579100), (5, 3636463280), (8, 2272789550), (10, 1818231640), (16, 1136394775), (20, 909115820), (25, 727292656), (40, 454557910), (50, 363646328), (80, 227278955), (100, 181823164), (200, 90911582), (400, 45455791), (421, 43188400), (842, 21594200), (1684, 10797100), (2105, 8637680), (3368, 5398550), (4210, 4318840), (6736, 2699275), (8420, 2159420), (10525, 1727536), (16840, 1079710), (21050, 863768), (33680, 539855), (42100, 431884), (84200, 215942), (107971, 168400)]