31209440

素因数分解:

$2^5\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1489}}^1$

素因数の和:1635

約数の個数: 48

約数和(自身を含む): 74345040

約数和(自身を除く): 43135600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 131, 160, 262, 524, 655, 1048, 1310, 1489, 2096, 2620, 2978, 4192, 5240, 5956, 7445, 10480, 11912, 14890, 20960, 23824, 29780, 47648, 59560, 119120, 195059, 238240, 390118, 780236, 975295, 1560472, 1950590, 3120944, 3901180, 6241888, 7802360, 15604720, 31209440]

約数ペア:

[(1, 31209440), (2, 15604720), (4, 7802360), (5, 6241888), (8, 3901180), (10, 3120944), (16, 1950590), (20, 1560472), (32, 975295), (40, 780236), (80, 390118), (131, 238240), (160, 195059), (262, 119120), (524, 59560), (655, 47648), (1048, 29780), (1310, 23824), (1489, 20960), (2096, 14890), (2620, 11912), (2978, 10480), (4192, 7445), (5240, 5956)]