25998680

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:276

約数の個数: 64

約数和(自身を含む): 60588000

約数和(自身を除く): 34589320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 89, 109, 134, 178, 218, 268, 335, 356, 436, 445, 536, 545, 670, 712, 872, 890, 1090, 1340, 1780, 2180, 2680, 3560, 4360, 5963, 7303, 9701, 11926, 14606, 19402, 23852, 29212, 29815, 36515, 38804, 47704, 48505, 58424, 59630, 73030, 77608, 97010, 119260, 146060, 194020, 238520, 292120, 388040, 649967, 1299934, 2599868, 3249835, 5199736, 6499670, 12999340, 25998680]

約数ペア:

[(1, 25998680), (2, 12999340), (4, 6499670), (5, 5199736), (8, 3249835), (10, 2599868), (20, 1299934), (40, 649967), (67, 388040), (89, 292120), (109, 238520), (134, 194020), (178, 146060), (218, 119260), (268, 97010), (335, 77608), (356, 73030), (436, 59630), (445, 58424), (536, 48505), (545, 47704), (670, 38804), (712, 36515), (872, 29815), (890, 29212), (1090, 23852), (1340, 19402), (1780, 14606), (2180, 11926), (2680, 9701), (3560, 7303), (4360, 5963)]