20201202580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^2\times {\mathrm{15413}}^1$

素因数の和:15577

約数の個数: 72

約数和(自身を含む): 46341327816

約数和(自身を除く): 26140125236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 71, 130, 142, 260, 284, 355, 710, 923, 1420, 1846, 3692, 4615, 5041, 9230, 10082, 15413, 18460, 20164, 25205, 30826, 50410, 61652, 65533, 77065, 100820, 131066, 154130, 200369, 262132, 308260, 327665, 400738, 655330, 801476, 1001845, 1094323, 1310660, 2003690, 2188646, 4007380, 4377292, 5471615, 10943230, 14226199, 21886460, 28452398, 56904796, 71130995, 77696933, 142261990, 155393866, 284523980, 310787732, 388484665, 776969330, 1010060129, 1553938660, 2020120258, 4040240516, 5050300645, 10100601290, 20201202580]

約数ペア:

[(1, 20201202580), (2, 10100601290), (4, 5050300645), (5, 4040240516), (10, 2020120258), (13, 1553938660), (20, 1010060129), (26, 776969330), (52, 388484665), (65, 310787732), (71, 284523980), (130, 155393866), (142, 142261990), (260, 77696933), (284, 71130995), (355, 56904796), (710, 28452398), (923, 21886460), (1420, 14226199), (1846, 10943230), (3692, 5471615), (4615, 4377292), (5041, 4007380), (9230, 2188646), (10082, 2003690), (15413, 1310660), (18460, 1094323), (20164, 1001845), (25205, 801476), (30826, 655330), (50410, 400738), (61652, 327665), (65533, 308260), (77065, 262132), (100820, 200369), (131066, 154130)]