85628020

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 183351168

約数和(自身を除く): 97723148

約数列:

[1, 2, 4, 5, 10, 20, 103, 197, 206, 211, 394, 412, 422, 515, 788, 844, 985, 1030, 1055, 1970, 2060, 2110, 3940, 4220, 20291, 21733, 40582, 41567, 43466, 81164, 83134, 86932, 101455, 108665, 166268, 202910, 207835, 217330, 405820, 415670, 434660, 831340, 4281401, 8562802, 17125604, 21407005, 42814010, 85628020]

約数ペア:

[(1, 85628020), (2, 42814010), (4, 21407005), (5, 17125604), (10, 8562802), (20, 4281401), (103, 831340), (197, 434660), (206, 415670), (211, 405820), (394, 217330), (412, 207835), (422, 202910), (515, 166268), (788, 108665), (844, 101455), (985, 86932), (1030, 83134), (1055, 81164), (1970, 43466), (2060, 41567), (2110, 40582), (3940, 21733), (4220, 20291)]