261297760

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{379}}^1$

素因数の和:564

約数の個数: 96

約数和(自身を含む): 643507200

約数和(自身を除く): 382209440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 139, 155, 160, 248, 278, 310, 379, 496, 556, 620, 695, 758, 992, 1112, 1240, 1390, 1516, 1895, 2224, 2480, 2780, 3032, 3790, 4309, 4448, 4960, 5560, 6064, 7580, 8618, 11120, 11749, 12128, 15160, 17236, 21545, 22240, 23498, 30320, 34472, 43090, 46996, 52681, 58745, 60640, 68944, 86180, 93992, 105362, 117490, 137888, 172360, 187984, 210724, 234980, 263405, 344720, 375968, 421448, 469960, 526810, 689440, 842896, 939920, 1053620, 1633111, 1685792, 1879840, 2107240, 3266222, 4214480, 6532444, 8165555, 8428960, 13064888, 16331110, 26129776, 32662220, 52259552, 65324440, 130648880, 261297760]

約数ペア:

[(1, 261297760), (2, 130648880), (4, 65324440), (5, 52259552), (8, 32662220), (10, 26129776), (16, 16331110), (20, 13064888), (31, 8428960), (32, 8165555), (40, 6532444), (62, 4214480), (80, 3266222), (124, 2107240), (139, 1879840), (155, 1685792), (160, 1633111), (248, 1053620), (278, 939920), (310, 842896), (379, 689440), (496, 526810), (556, 469960), (620, 421448), (695, 375968), (758, 344720), (992, 263405), (1112, 234980), (1240, 210724), (1390, 187984), (1516, 172360), (1895, 137888), (2224, 117490), (2480, 105362), (2780, 93992), (3032, 86180), (3790, 68944), (4309, 60640), (4448, 58745), (4960, 52681), (5560, 46996), (6064, 43090), (7580, 34472), (8618, 30320), (11120, 23498), (11749, 22240), (12128, 21545), (15160, 17236)]