31151655

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 58608000

約数和(自身を除く): 27456345

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 73, 87, 109, 135, 145, 219, 261, 327, 365, 435, 545, 657, 783, 981, 1095, 1305, 1635, 1971, 2117, 2943, 3161, 3285, 3915, 4905, 6351, 7957, 9483, 9855, 10585, 14715, 15805, 19053, 23871, 28449, 31755, 39785, 47415, 57159, 71613, 85347, 95265, 119355, 142245, 214839, 230753, 285795, 358065, 426735, 692259, 1074195, 1153765, 2076777, 3461295, 6230331, 10383885, 31151655]

約数ペア:

[(1, 31151655), (3, 10383885), (5, 6230331), (9, 3461295), (15, 2076777), (27, 1153765), (29, 1074195), (45, 692259), (73, 426735), (87, 358065), (109, 285795), (135, 230753), (145, 214839), (219, 142245), (261, 119355), (327, 95265), (365, 85347), (435, 71613), (545, 57159), (657, 47415), (783, 39785), (981, 31755), (1095, 28449), (1305, 23871), (1635, 19053), (1971, 15805), (2117, 14715), (2943, 10585), (3161, 9855), (3285, 9483), (3915, 7957), (4905, 6351)]