15981740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 35078400

約数和(自身を除く): 19096660

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 173, 298, 310, 346, 596, 620, 692, 745, 865, 1490, 1730, 2980, 3460, 4619, 5363, 9238, 10726, 18476, 21452, 23095, 25777, 26815, 46190, 51554, 53630, 92380, 103108, 107260, 128885, 257770, 515540, 799087, 1598174, 3196348, 3995435, 7990870, 15981740]

約数ペア:

[(1, 15981740), (2, 7990870), (4, 3995435), (5, 3196348), (10, 1598174), (20, 799087), (31, 515540), (62, 257770), (124, 128885), (149, 107260), (155, 103108), (173, 92380), (298, 53630), (310, 51554), (346, 46190), (596, 26815), (620, 25777), (692, 23095), (745, 21452), (865, 18476), (1490, 10726), (1730, 9238), (2980, 5363), (3460, 4619)]