1272039040

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:418

約数の個数: 128

約数和(自身を含む): 3118752000

約数和(自身を除く): 1846712960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 139, 158, 160, 181, 278, 316, 320, 362, 395, 556, 632, 640, 695, 724, 790, 905, 1112, 1264, 1390, 1448, 1580, 1810, 2224, 2528, 2780, 2896, 3160, 3620, 4448, 5056, 5560, 5792, 6320, 7240, 8896, 10112, 10981, 11120, 11584, 12640, 14299, 14480, 17792, 21962, 22240, 23168, 25159, 25280, 28598, 28960, 43924, 44480, 50318, 50560, 54905, 57196, 57920, 71495, 87848, 88960, 100636, 109810, 114392, 115840, 125795, 142990, 175696, 201272, 219620, 228784, 251590, 285980, 351392, 402544, 439240, 457568, 503180, 571960, 702784, 805088, 878480, 915136, 1006360, 1143920, 1405568, 1610176, 1756960, 1830272, 1987561, 2012720, 2287840, 3220352, 3513920, 3975122, 4025440, 4575680, 7027840, 7950244, 8050880, 9151360, 9937805, 15900488, 16101760, 19875610, 31800976, 39751220, 63601952, 79502440, 127203904, 159004880, 254407808, 318009760, 636019520, 1272039040]

約数ペア:

[(1, 1272039040), (2, 636019520), (4, 318009760), (5, 254407808), (8, 159004880), (10, 127203904), (16, 79502440), (20, 63601952), (32, 39751220), (40, 31800976), (64, 19875610), (79, 16101760), (80, 15900488), (128, 9937805), (139, 9151360), (158, 8050880), (160, 7950244), (181, 7027840), (278, 4575680), (316, 4025440), (320, 3975122), (362, 3513920), (395, 3220352), (556, 2287840), (632, 2012720), (640, 1987561), (695, 1830272), (724, 1756960), (790, 1610176), (905, 1405568), (1112, 1143920), (1264, 1006360), (1390, 915136), (1448, 878480), (1580, 805088), (1810, 702784), (2224, 571960), (2528, 503180), (2780, 457568), (2896, 439240), (3160, 402544), (3620, 351392), (4448, 285980), (5056, 251590), (5560, 228784), (5792, 219620), (6320, 201272), (7240, 175696), (8896, 142990), (10112, 125795), (10981, 115840), (11120, 114392), (11584, 109810), (12640, 100636), (14299, 88960), (14480, 87848), (17792, 71495), (21962, 57920), (22240, 57196), (23168, 54905), (25159, 50560), (25280, 50318), (28598, 44480), (28960, 43924)]