20726640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2617}}^1$

素因数の和:2647

約数の個数: 120

約数和(自身を含む): 75963888

約数和(自身を除く): 55237248

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2617, 2640, 3960, 5234, 7851, 7920, 10468, 13085, 15702, 20936, 23553, 26170, 28787, 31404, 39255, 41872, 47106, 52340, 57574, 62808, 78510, 86361, 94212, 104680, 115148, 117765, 125616, 143935, 157020, 172722, 188424, 209360, 230296, 235530, 259083, 287870, 314040, 345444, 376848, 431805, 460592, 471060, 518166, 575740, 628080, 690888, 863610, 942120, 1036332, 1151480, 1295415, 1381776, 1727220, 1884240, 2072664, 2302960, 2590830, 3454440, 4145328, 5181660, 6908880, 10363320, 20726640]

約数ペア:

[(1, 20726640), (2, 10363320), (3, 6908880), (4, 5181660), (5, 4145328), (6, 3454440), (8, 2590830), (9, 2302960), (10, 2072664), (11, 1884240), (12, 1727220), (15, 1381776), (16, 1295415), (18, 1151480), (20, 1036332), (22, 942120), (24, 863610), (30, 690888), (33, 628080), (36, 575740), (40, 518166), (44, 471060), (45, 460592), (48, 431805), (55, 376848), (60, 345444), (66, 314040), (72, 287870), (80, 259083), (88, 235530), (90, 230296), (99, 209360), (110, 188424), (120, 172722), (132, 157020), (144, 143935), (165, 125616), (176, 117765), (180, 115148), (198, 104680), (220, 94212), (240, 86361), (264, 78510), (330, 62808), (360, 57574), (396, 52340), (440, 47106), (495, 41872), (528, 39255), (660, 31404), (720, 28787), (792, 26170), (880, 23553), (990, 20936), (1320, 15702), (1584, 13085), (1980, 10468), (2617, 7920), (2640, 7851), (3960, 5234)]