15979725

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 30950400

約数和(自身を除く): 14970675

約数列:

[1, 3, 5, 9, 15, 25, 29, 31, 45, 75, 79, 87, 93, 145, 155, 225, 237, 261, 279, 395, 435, 465, 711, 725, 775, 899, 1185, 1305, 1395, 1975, 2175, 2291, 2325, 2449, 2697, 3555, 4495, 5925, 6525, 6873, 6975, 7347, 8091, 11455, 12245, 13485, 17775, 20619, 22041, 22475, 34365, 36735, 40455, 57275, 61225, 67425, 71021, 103095, 110205, 171825, 183675, 202275, 213063, 355105, 515475, 551025, 639189, 1065315, 1775525, 3195945, 5326575, 15979725]

約数ペア:

[(1, 15979725), (3, 5326575), (5, 3195945), (9, 1775525), (15, 1065315), (25, 639189), (29, 551025), (31, 515475), (45, 355105), (75, 213063), (79, 202275), (87, 183675), (93, 171825), (145, 110205), (155, 103095), (225, 71021), (237, 67425), (261, 61225), (279, 57275), (395, 40455), (435, 36735), (465, 34365), (711, 22475), (725, 22041), (775, 20619), (899, 17775), (1185, 13485), (1305, 12245), (1395, 11455), (1975, 8091), (2175, 7347), (2291, 6975), (2325, 6873), (2449, 6525), (2697, 5925), (3555, 4495)]