207971920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:980

約数の個数: 80

約数和(自身を含む): 523216512

約数和(自身を除く): 315244592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 311, 520, 622, 643, 1040, 1244, 1286, 1555, 2488, 2572, 3110, 3215, 4043, 4976, 5144, 6220, 6430, 8086, 8359, 10288, 12440, 12860, 16172, 16718, 20215, 24880, 25720, 32344, 33436, 40430, 41795, 51440, 64688, 66872, 80860, 83590, 133744, 161720, 167180, 199973, 323440, 334360, 399946, 668720, 799892, 999865, 1599784, 1999730, 2599649, 3199568, 3999460, 5199298, 7998920, 10398596, 12998245, 15997840, 20797192, 25996490, 41594384, 51992980, 103985960, 207971920]

約数ペア:

[(1, 207971920), (2, 103985960), (4, 51992980), (5, 41594384), (8, 25996490), (10, 20797192), (13, 15997840), (16, 12998245), (20, 10398596), (26, 7998920), (40, 5199298), (52, 3999460), (65, 3199568), (80, 2599649), (104, 1999730), (130, 1599784), (208, 999865), (260, 799892), (311, 668720), (520, 399946), (622, 334360), (643, 323440), (1040, 199973), (1244, 167180), (1286, 161720), (1555, 133744), (2488, 83590), (2572, 80860), (3110, 66872), (3215, 64688), (4043, 51440), (4976, 41795), (5144, 40430), (6220, 33436), (6430, 32344), (8086, 25720), (8359, 24880), (10288, 20215), (12440, 16718), (12860, 16172)]