21909990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 55157760

約数和(自身を除く): 33247770

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 47, 82, 94, 123, 141, 205, 235, 246, 282, 379, 410, 470, 615, 705, 758, 1137, 1230, 1410, 1895, 1927, 2274, 3790, 3854, 5685, 5781, 9635, 11370, 11562, 15539, 17813, 19270, 28905, 31078, 35626, 46617, 53439, 57810, 77695, 89065, 93234, 106878, 155390, 178130, 233085, 267195, 466170, 534390, 730333, 1460666, 2190999, 3651665, 4381998, 7303330, 10954995, 21909990]

約数ペア:

[(1, 21909990), (2, 10954995), (3, 7303330), (5, 4381998), (6, 3651665), (10, 2190999), (15, 1460666), (30, 730333), (41, 534390), (47, 466170), (82, 267195), (94, 233085), (123, 178130), (141, 155390), (205, 106878), (235, 93234), (246, 89065), (282, 77695), (379, 57810), (410, 53439), (470, 46617), (615, 35626), (705, 31078), (758, 28905), (1137, 19270), (1230, 17813), (1410, 15539), (1895, 11562), (1927, 11370), (2274, 9635), (3790, 5781), (3854, 5685)]