18049905

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 35020800

約数和(自身を除く): 16970895

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 227, 279, 285, 465, 513, 589, 681, 837, 855, 1135, 1395, 1767, 2043, 2565, 2945, 3405, 4185, 4313, 5301, 6129, 7037, 8835, 10215, 12939, 15903, 21111, 21565, 26505, 30645, 35185, 38817, 63333, 64695, 79515, 105555, 116451, 133703, 189999, 194085, 316665, 401109, 582255, 668515, 949995, 1203327, 2005545, 3609981, 6016635, 18049905]

約数ペア:

[(1, 18049905), (3, 6016635), (5, 3609981), (9, 2005545), (15, 1203327), (19, 949995), (27, 668515), (31, 582255), (45, 401109), (57, 316665), (93, 194085), (95, 189999), (135, 133703), (155, 116451), (171, 105555), (227, 79515), (279, 64695), (285, 63333), (465, 38817), (513, 35185), (589, 30645), (681, 26505), (837, 21565), (855, 21111), (1135, 15903), (1395, 12939), (1767, 10215), (2043, 8835), (2565, 7037), (2945, 6129), (3405, 5301), (4185, 4313)]