21520512176

素因数分解:

$2^4\times {\mathrm{239}}^1\times {\mathrm{269}}^1\times {\mathrm{20921}}^1$

素因数の和:21437

約数の個数: 40

約数和(自身を含む): 42028113600

約数和(自身を除く): 20507601424

約数列:

[1, 2, 4, 8, 16, 239, 269, 478, 538, 956, 1076, 1912, 2152, 3824, 4304, 20921, 41842, 64291, 83684, 128582, 167368, 257164, 334736, 514328, 1028656, 5000119, 5627749, 10000238, 11255498, 20000476, 22510996, 40000952, 45021992, 80001904, 90043984, 1345032011, 2690064022, 5380128044, 10760256088, 21520512176]

約数ペア:

[(1, 21520512176), (2, 10760256088), (4, 5380128044), (8, 2690064022), (16, 1345032011), (239, 90043984), (269, 80001904), (478, 45021992), (538, 40000952), (956, 22510996), (1076, 20000476), (1912, 11255498), (2152, 10000238), (3824, 5627749), (4304, 5000119), (20921, 1028656), (41842, 514328), (64291, 334736), (83684, 257164), (128582, 167368)]