28704915

素因数分解:

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

素因数の和:102

約数の個数: 64

約数和(自身を含む): 55603200

約数和(自身を除く): 26898285

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 93, 95, 135, 155, 171, 279, 285, 361, 465, 513, 589, 837, 855, 1083, 1395, 1767, 1805, 2565, 2945, 3249, 4185, 5301, 5415, 6859, 8835, 9747, 11191, 15903, 16245, 20577, 26505, 33573, 34295, 48735, 55955, 61731, 79515, 100719, 102885, 167865, 185193, 212629, 302157, 308655, 503595, 637887, 925965, 1063145, 1510785, 1913661, 3189435, 5740983, 9568305, 28704915]

約数ペア:

[(1, 28704915), (3, 9568305), (5, 5740983), (9, 3189435), (15, 1913661), (19, 1510785), (27, 1063145), (31, 925965), (45, 637887), (57, 503595), (93, 308655), (95, 302157), (135, 212629), (155, 185193), (171, 167865), (279, 102885), (285, 100719), (361, 79515), (465, 61731), (513, 55955), (589, 48735), (837, 34295), (855, 33573), (1083, 26505), (1395, 20577), (1767, 16245), (1805, 15903), (2565, 11191), (2945, 9747), (3249, 8835), (4185, 6859), (5301, 5415)]