81394820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8461}}^1$

素因数の和:8520

約数の個数: 48

約数和(自身を含む): 189074928

約数和(自身を除く): 107680108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2405, 4810, 8461, 9620, 16922, 33844, 42305, 84610, 109993, 169220, 219986, 313057, 439972, 549965, 626114, 1099930, 1252228, 1565285, 2199860, 3130570, 4069741, 6261140, 8139482, 16278964, 20348705, 40697410, 81394820]

約数ペア:

[(1, 81394820), (2, 40697410), (4, 20348705), (5, 16278964), (10, 8139482), (13, 6261140), (20, 4069741), (26, 3130570), (37, 2199860), (52, 1565285), (65, 1252228), (74, 1099930), (130, 626114), (148, 549965), (185, 439972), (260, 313057), (370, 219986), (481, 169220), (740, 109993), (962, 84610), (1924, 42305), (2405, 33844), (4810, 16922), (8461, 9620)]