1996890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 5647104

約数和(自身を除く): 3650214

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 37, 42, 70, 74, 105, 111, 185, 210, 222, 257, 259, 370, 514, 518, 555, 771, 777, 1110, 1285, 1295, 1542, 1554, 1799, 2570, 2590, 3598, 3855, 3885, 5397, 7710, 7770, 8995, 9509, 10794, 17990, 19018, 26985, 28527, 47545, 53970, 57054, 66563, 95090, 133126, 142635, 199689, 285270, 332815, 399378, 665630, 998445, 1996890]

約数ペア:

[(1, 1996890), (2, 998445), (3, 665630), (5, 399378), (6, 332815), (7, 285270), (10, 199689), (14, 142635), (15, 133126), (21, 95090), (30, 66563), (35, 57054), (37, 53970), (42, 47545), (70, 28527), (74, 26985), (105, 19018), (111, 17990), (185, 10794), (210, 9509), (222, 8995), (257, 7770), (259, 7710), (370, 5397), (514, 3885), (518, 3855), (555, 3598), (771, 2590), (777, 2570), (1110, 1799), (1285, 1554), (1295, 1542)]