21551208

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{787}}^1$

素因数の和:966

約数の個数: 64

約数和(自身を含む): 62031360

約数和(自身を除く): 40480152

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 163, 168, 326, 489, 652, 787, 978, 1141, 1304, 1574, 1956, 2282, 2361, 3148, 3423, 3912, 4564, 4722, 5509, 6296, 6846, 9128, 9444, 11018, 13692, 16527, 18888, 22036, 27384, 33054, 44072, 66108, 128281, 132216, 256562, 384843, 513124, 769686, 897967, 1026248, 1539372, 1795934, 2693901, 3078744, 3591868, 5387802, 7183736, 10775604, 21551208]

約数ペア:

[(1, 21551208), (2, 10775604), (3, 7183736), (4, 5387802), (6, 3591868), (7, 3078744), (8, 2693901), (12, 1795934), (14, 1539372), (21, 1026248), (24, 897967), (28, 769686), (42, 513124), (56, 384843), (84, 256562), (163, 132216), (168, 128281), (326, 66108), (489, 44072), (652, 33054), (787, 27384), (978, 22036), (1141, 18888), (1304, 16527), (1574, 13692), (1956, 11018), (2282, 9444), (2361, 9128), (3148, 6846), (3423, 6296), (3912, 5509), (4564, 4722)]