81670155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 155990016

約数和(自身を除く): 74319861

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 61, 105, 123, 183, 205, 287, 305, 311, 427, 615, 861, 915, 933, 1281, 1435, 1555, 2135, 2177, 2501, 4305, 4665, 6405, 6531, 7503, 10885, 12505, 12751, 17507, 18971, 32655, 37515, 38253, 52521, 56913, 63755, 87535, 89257, 94855, 132797, 191265, 262605, 267771, 284565, 398391, 446285, 663985, 777811, 1338855, 1991955, 2333433, 3889055, 5444677, 11667165, 16334031, 27223385, 81670155]

約数ペア:

[(1, 81670155), (3, 27223385), (5, 16334031), (7, 11667165), (15, 5444677), (21, 3889055), (35, 2333433), (41, 1991955), (61, 1338855), (105, 777811), (123, 663985), (183, 446285), (205, 398391), (287, 284565), (305, 267771), (311, 262605), (427, 191265), (615, 132797), (861, 94855), (915, 89257), (933, 87535), (1281, 63755), (1435, 56913), (1555, 52521), (2135, 38253), (2177, 37515), (2501, 32655), (4305, 18971), (4665, 17507), (6405, 12751), (6531, 12505), (7503, 10885)]