18217940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1709}}^1$

素因数の和:1772

約数の個数: 48

約数和(自身を含む): 42230160

約数和(自身を除く): 24012220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1709, 2132, 2665, 3418, 5330, 6836, 8545, 10660, 17090, 22217, 34180, 44434, 70069, 88868, 111085, 140138, 222170, 280276, 350345, 444340, 700690, 910897, 1401380, 1821794, 3643588, 4554485, 9108970, 18217940]

約数ペア:

[(1, 18217940), (2, 9108970), (4, 4554485), (5, 3643588), (10, 1821794), (13, 1401380), (20, 910897), (26, 700690), (41, 444340), (52, 350345), (65, 280276), (82, 222170), (130, 140138), (164, 111085), (205, 88868), (260, 70069), (410, 44434), (533, 34180), (820, 22217), (1066, 17090), (1709, 10660), (2132, 8545), (2665, 6836), (3418, 5330)]