31491495

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1$

素因数の和:664

約数の個数: 48

約数和(自身を含む): 62786880

約数和(自身を除く): 31295385

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 257, 315, 389, 771, 1167, 1285, 1799, 1945, 2313, 2723, 3501, 3855, 5397, 5835, 8169, 8995, 11565, 13615, 16191, 17505, 24507, 26985, 40845, 80955, 99973, 122535, 299919, 499865, 699811, 899757, 1499595, 2099433, 3499055, 4498785, 6298299, 10497165, 31491495]

約数ペア:

[(1, 31491495), (3, 10497165), (5, 6298299), (7, 4498785), (9, 3499055), (15, 2099433), (21, 1499595), (35, 899757), (45, 699811), (63, 499865), (105, 299919), (257, 122535), (315, 99973), (389, 80955), (771, 40845), (1167, 26985), (1285, 24507), (1799, 17505), (1945, 16191), (2313, 13615), (2723, 11565), (3501, 8995), (3855, 8169), (5397, 5835)]