401059640

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{63863}}^1$

素因数の和:64031

約数の個数: 32

約数和(自身を含む): 908146080

約数和(自身を除く): 507086440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 63863, 127726, 255452, 319315, 510904, 638630, 1277260, 2554520, 10026491, 20052982, 40105964, 50132455, 80211928, 100264910, 200529820, 401059640]

約数ペア:

[(1, 401059640), (2, 200529820), (4, 100264910), (5, 80211928), (8, 50132455), (10, 40105964), (20, 20052982), (40, 10026491), (157, 2554520), (314, 1277260), (628, 638630), (785, 510904), (1256, 319315), (1570, 255452), (3140, 127726), (6280, 63863)]