129488380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1861}}^1$

素因数の和:1955

約数の個数: 72

約数和(自身を含む): 320949216

約数和(自身を除く): 191460836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1861, 1988, 2485, 3479, 3722, 4970, 6958, 7444, 9305, 9940, 13027, 13916, 17395, 18610, 26054, 34790, 37220, 52108, 65135, 69580, 91189, 130270, 132131, 182378, 260540, 264262, 364756, 455945, 528524, 660655, 911890, 924917, 1321310, 1823780, 1849834, 2642620, 3699668, 4624585, 6474419, 9249170, 12948838, 18498340, 25897676, 32372095, 64744190, 129488380]

約数ペア:

[(1, 129488380), (2, 64744190), (4, 32372095), (5, 25897676), (7, 18498340), (10, 12948838), (14, 9249170), (20, 6474419), (28, 4624585), (35, 3699668), (49, 2642620), (70, 1849834), (71, 1823780), (98, 1321310), (140, 924917), (142, 911890), (196, 660655), (245, 528524), (284, 455945), (355, 364756), (490, 264262), (497, 260540), (710, 182378), (980, 132131), (994, 130270), (1420, 91189), (1861, 69580), (1988, 65135), (2485, 52108), (3479, 37220), (3722, 34790), (4970, 26054), (6958, 18610), (7444, 17395), (9305, 13916), (9940, 13027)]