180720080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{72871}}^1$

素因数の和:72915

約数の個数: 40

約数和(自身を含む): 433734144

約数和(自身を除く): 253014064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 72871, 145742, 291484, 364355, 582968, 728710, 1165936, 1457420, 2259001, 2914840, 4518002, 5829680, 9036004, 11295005, 18072008, 22590010, 36144016, 45180020, 90360040, 180720080]

約数ペア:

[(1, 180720080), (2, 90360040), (4, 45180020), (5, 36144016), (8, 22590010), (10, 18072008), (16, 11295005), (20, 9036004), (31, 5829680), (40, 4518002), (62, 2914840), (80, 2259001), (124, 1457420), (155, 1165936), (248, 728710), (310, 582968), (496, 364355), (620, 291484), (1240, 145742), (2480, 72871)]