20120355855

素因数分解:

$3^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{287167}}^1$

素因数の和:287357

約数の個数: 40

約数和(自身を含む): 36276210432

約数和(自身を除く): 16155854577

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 173, 405, 519, 865, 1557, 2595, 4671, 7785, 14013, 23355, 70065, 287167, 861501, 1435835, 2584503, 4307505, 7753509, 12922515, 23260527, 38767545, 49679891, 116302635, 149039673, 248399455, 447119019, 745198365, 1341357057, 2235595095, 4024071171, 6706785285, 20120355855]

約数ペア:

[(1, 20120355855), (3, 6706785285), (5, 4024071171), (9, 2235595095), (15, 1341357057), (27, 745198365), (45, 447119019), (81, 248399455), (135, 149039673), (173, 116302635), (405, 49679891), (519, 38767545), (865, 23260527), (1557, 12922515), (2595, 7753509), (4671, 4307505), (7785, 2584503), (14013, 1435835), (23355, 861501), (70065, 287167)]