20121458

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:231

約数の個数: 48

約数和(自身を含む): 37428480

約数和(自身を除く): 17307022

約数列:

[1, 2, 7, 14, 23, 46, 49, 79, 98, 113, 158, 161, 226, 322, 553, 791, 1106, 1127, 1582, 1817, 2254, 2599, 3634, 3871, 5198, 5537, 7742, 8927, 11074, 12719, 17854, 18193, 25438, 36386, 62489, 89033, 124978, 127351, 178066, 205321, 254702, 410642, 437423, 874846, 1437247, 2874494, 10060729, 20121458]

約数ペア:

[(1, 20121458), (2, 10060729), (7, 2874494), (14, 1437247), (23, 874846), (46, 437423), (49, 410642), (79, 254702), (98, 205321), (113, 178066), (158, 127351), (161, 124978), (226, 89033), (322, 62489), (553, 36386), (791, 25438), (1106, 18193), (1127, 17854), (1582, 12719), (1817, 11074), (2254, 8927), (2599, 7742), (3634, 5537), (3871, 5198)]