20487320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3851}}^1$

素因数の和:3888

約数の個数: 64

約数和(自身を含む): 55468800

約数和(自身を除く): 34981480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 3851, 5320, 7702, 15404, 19255, 26957, 30808, 38510, 53914, 73169, 77020, 107828, 134785, 146338, 154040, 215656, 269570, 292676, 365845, 512183, 539140, 585352, 731690, 1024366, 1078280, 1463380, 2048732, 2560915, 2926760, 4097464, 5121830, 10243660, 20487320]

約数ペア:

[(1, 20487320), (2, 10243660), (4, 5121830), (5, 4097464), (7, 2926760), (8, 2560915), (10, 2048732), (14, 1463380), (19, 1078280), (20, 1024366), (28, 731690), (35, 585352), (38, 539140), (40, 512183), (56, 365845), (70, 292676), (76, 269570), (95, 215656), (133, 154040), (140, 146338), (152, 134785), (190, 107828), (266, 77020), (280, 73169), (380, 53914), (532, 38510), (665, 30808), (760, 26957), (1064, 19255), (1330, 15404), (2660, 7702), (3851, 5320)]