309618140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{1949}}^1$

素因数の和:2031

約数の個数: 72

約数和(自身を含む): 719409600

約数和(自身を除く): 409791460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 169, 188, 235, 260, 338, 470, 611, 676, 845, 940, 1222, 1690, 1949, 2444, 3055, 3380, 3898, 6110, 7796, 7943, 9745, 12220, 15886, 19490, 25337, 31772, 38980, 39715, 50674, 79430, 91603, 101348, 126685, 158860, 183206, 253370, 329381, 366412, 458015, 506740, 658762, 916030, 1190839, 1317524, 1646905, 1832060, 2381678, 3293810, 4763356, 5954195, 6587620, 11908390, 15480907, 23816780, 30961814, 61923628, 77404535, 154809070, 309618140]

約数ペア:

[(1, 309618140), (2, 154809070), (4, 77404535), (5, 61923628), (10, 30961814), (13, 23816780), (20, 15480907), (26, 11908390), (47, 6587620), (52, 5954195), (65, 4763356), (94, 3293810), (130, 2381678), (169, 1832060), (188, 1646905), (235, 1317524), (260, 1190839), (338, 916030), (470, 658762), (611, 506740), (676, 458015), (845, 366412), (940, 329381), (1222, 253370), (1690, 183206), (1949, 158860), (2444, 126685), (3055, 101348), (3380, 91603), (3898, 79430), (6110, 50674), (7796, 39715), (7943, 38980), (9745, 31772), (12220, 25337), (15886, 19490)]