31139160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19961}}^1$

素因数の和:19988

約数の個数: 64

約数和(自身を含む): 100608480

約数和(自身を除く): 69469320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 19961, 39922, 59883, 79844, 99805, 119766, 159688, 199610, 239532, 259493, 299415, 399220, 479064, 518986, 598830, 778479, 798440, 1037972, 1197660, 1297465, 1556958, 2075944, 2395320, 2594930, 3113916, 3892395, 5189860, 6227832, 7784790, 10379720, 15569580, 31139160]

約数ペア:

[(1, 31139160), (2, 15569580), (3, 10379720), (4, 7784790), (5, 6227832), (6, 5189860), (8, 3892395), (10, 3113916), (12, 2594930), (13, 2395320), (15, 2075944), (20, 1556958), (24, 1297465), (26, 1197660), (30, 1037972), (39, 798440), (40, 778479), (52, 598830), (60, 518986), (65, 479064), (78, 399220), (104, 299415), (120, 259493), (130, 239532), (156, 199610), (195, 159688), (260, 119766), (312, 99805), (390, 79844), (520, 59883), (780, 39922), (1560, 19961)]