20580890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:335

約数の個数: 48

約数和(自身を含む): 41454504

約数和(自身を除く): 20873614

約数列:

[1, 2, 5, 10, 11, 22, 55, 73, 110, 121, 146, 233, 242, 365, 466, 605, 730, 803, 1165, 1210, 1606, 2330, 2563, 4015, 5126, 8030, 8833, 12815, 17009, 17666, 25630, 28193, 34018, 44165, 56386, 85045, 88330, 140965, 170090, 187099, 281930, 374198, 935495, 1870990, 2058089, 4116178, 10290445, 20580890]

約数ペア:

[(1, 20580890), (2, 10290445), (5, 4116178), (10, 2058089), (11, 1870990), (22, 935495), (55, 374198), (73, 281930), (110, 187099), (121, 170090), (146, 140965), (233, 88330), (242, 85045), (365, 56386), (466, 44165), (605, 34018), (730, 28193), (803, 25630), (1165, 17666), (1210, 17009), (1606, 12815), (2330, 8833), (2563, 8030), (4015, 5126)]