31192720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 79213680

約数和(自身を除く): 48020960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 89, 104, 130, 178, 208, 260, 337, 356, 445, 520, 674, 712, 890, 1040, 1157, 1348, 1424, 1685, 1780, 2314, 2696, 3370, 3560, 4381, 4628, 5392, 5785, 6740, 7120, 8762, 9256, 11570, 13480, 17524, 18512, 21905, 23140, 26960, 29993, 35048, 43810, 46280, 59986, 70096, 87620, 92560, 119972, 149965, 175240, 239944, 299930, 350480, 389909, 479888, 599860, 779818, 1199720, 1559636, 1949545, 2399440, 3119272, 3899090, 6238544, 7798180, 15596360, 31192720]

約数ペア:

[(1, 31192720), (2, 15596360), (4, 7798180), (5, 6238544), (8, 3899090), (10, 3119272), (13, 2399440), (16, 1949545), (20, 1559636), (26, 1199720), (40, 779818), (52, 599860), (65, 479888), (80, 389909), (89, 350480), (104, 299930), (130, 239944), (178, 175240), (208, 149965), (260, 119972), (337, 92560), (356, 87620), (445, 70096), (520, 59986), (674, 46280), (712, 43810), (890, 35048), (1040, 29993), (1157, 26960), (1348, 23140), (1424, 21905), (1685, 18512), (1780, 17524), (2314, 13480), (2696, 11570), (3370, 9256), (3560, 8762), (4381, 7120), (4628, 6740), (5392, 5785)]