78830220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{26813}}^1$

素因数の和:26839

約数の個数: 72

約数和(自身を含む): 256770864

約数和(自身を除く): 177940644

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 26813, 53626, 80439, 107252, 134065, 160878, 187691, 268130, 321756, 375382, 402195, 536260, 563073, 750764, 804390, 938455, 1126146, 1313837, 1608780, 1876910, 2252292, 2627674, 2815365, 3753820, 3941511, 5255348, 5630730, 6569185, 7883022, 11261460, 13138370, 15766044, 19707555, 26276740, 39415110, 78830220]

約数ペア:

[(1, 78830220), (2, 39415110), (3, 26276740), (4, 19707555), (5, 15766044), (6, 13138370), (7, 11261460), (10, 7883022), (12, 6569185), (14, 5630730), (15, 5255348), (20, 3941511), (21, 3753820), (28, 2815365), (30, 2627674), (35, 2252292), (42, 1876910), (49, 1608780), (60, 1313837), (70, 1126146), (84, 938455), (98, 804390), (105, 750764), (140, 563073), (147, 536260), (196, 402195), (210, 375382), (245, 321756), (294, 268130), (420, 187691), (490, 160878), (588, 134065), (735, 107252), (980, 80439), (1470, 53626), (2940, 26813)]