20612585

素因数分解:

$5^1\times 7^4\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:151

約数の個数: 40

約数和(自身を含む): 30855816

約数和(自身を除く): 10243231

約数列:

[1, 5, 7, 17, 35, 49, 85, 101, 119, 245, 343, 505, 595, 707, 833, 1715, 1717, 2401, 3535, 4165, 4949, 5831, 8585, 12005, 12019, 24745, 29155, 34643, 40817, 60095, 84133, 173215, 204085, 242501, 420665, 588931, 1212505, 2944655, 4122517, 20612585]

約数ペア:

[(1, 20612585), (5, 4122517), (7, 2944655), (17, 1212505), (35, 588931), (49, 420665), (85, 242501), (101, 204085), (119, 173215), (245, 84133), (343, 60095), (505, 40817), (595, 34643), (707, 29155), (833, 24745), (1715, 12019), (1717, 12005), (2401, 8585), (3535, 5831), (4165, 4949)]