21157776

素因数分解:

$2^4\times 3^2\times {\mathrm{349}}^1\times {\mathrm{421}}^1$

素因数の和:784

約数の個数: 60

約数和(自身を含む): 59523100

約数和(自身を除く): 38365324

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 349, 421, 698, 842, 1047, 1263, 1396, 1684, 2094, 2526, 2792, 3141, 3368, 3789, 4188, 5052, 5584, 6282, 6736, 7578, 8376, 10104, 12564, 15156, 16752, 20208, 25128, 30312, 50256, 60624, 146929, 293858, 440787, 587716, 881574, 1175432, 1322361, 1763148, 2350864, 2644722, 3526296, 5289444, 7052592, 10578888, 21157776]

約数ペア:

[(1, 21157776), (2, 10578888), (3, 7052592), (4, 5289444), (6, 3526296), (8, 2644722), (9, 2350864), (12, 1763148), (16, 1322361), (18, 1175432), (24, 881574), (36, 587716), (48, 440787), (72, 293858), (144, 146929), (349, 60624), (421, 50256), (698, 30312), (842, 25128), (1047, 20208), (1263, 16752), (1396, 15156), (1684, 12564), (2094, 10104), (2526, 8376), (2792, 7578), (3141, 6736), (3368, 6282), (3789, 5584), (4188, 5052)]