72438440

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5189}}^1$

素因数の和:5549

約数の個数: 32

約数和(自身を含む): 163485000

約数和(自身を除く): 91046560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 5189, 6980, 10378, 13960, 20756, 25945, 41512, 51890, 103780, 207560, 1810961, 3621922, 7243844, 9054805, 14487688, 18109610, 36219220, 72438440]

約数ペア:

[(1, 72438440), (2, 36219220), (4, 18109610), (5, 14487688), (8, 9054805), (10, 7243844), (20, 3621922), (40, 1810961), (349, 207560), (698, 103780), (1396, 51890), (1745, 41512), (2792, 25945), (3490, 20756), (5189, 13960), (6980, 10378)]