81569475

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 159781440

約数和(自身を除く): 78211965

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 79, 117, 195, 225, 237, 325, 353, 395, 585, 711, 975, 1027, 1059, 1185, 1765, 1975, 2925, 3081, 3177, 3555, 4589, 5135, 5295, 5925, 8825, 9243, 13767, 15405, 15885, 17775, 22945, 25675, 26475, 27887, 41301, 46215, 68835, 77025, 79425, 83661, 114725, 139435, 206505, 231075, 250983, 344175, 362531, 418305, 697175, 1032525, 1087593, 1254915, 1812655, 2091525, 3262779, 5437965, 6274575, 9063275, 16313895, 27189825, 81569475]

約数ペア:

[(1, 81569475), (3, 27189825), (5, 16313895), (9, 9063275), (13, 6274575), (15, 5437965), (25, 3262779), (39, 2091525), (45, 1812655), (65, 1254915), (75, 1087593), (79, 1032525), (117, 697175), (195, 418305), (225, 362531), (237, 344175), (325, 250983), (353, 231075), (395, 206505), (585, 139435), (711, 114725), (975, 83661), (1027, 79425), (1059, 77025), (1185, 68835), (1765, 46215), (1975, 41301), (2925, 27887), (3081, 26475), (3177, 25675), (3555, 22945), (4589, 17775), (5135, 15885), (5295, 15405), (5925, 13767), (8825, 9243)]