61537720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 143337600

約数和(自身を除く): 81799880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 157, 164, 205, 239, 314, 328, 410, 478, 628, 785, 820, 956, 1195, 1256, 1570, 1640, 1912, 2390, 3140, 4780, 6280, 6437, 9560, 9799, 12874, 19598, 25748, 32185, 37523, 39196, 48995, 51496, 64370, 75046, 78392, 97990, 128740, 150092, 187615, 195980, 257480, 300184, 375230, 391960, 750460, 1500920, 1538443, 3076886, 6153772, 7692215, 12307544, 15384430, 30768860, 61537720]

約数ペア:

[(1, 61537720), (2, 30768860), (4, 15384430), (5, 12307544), (8, 7692215), (10, 6153772), (20, 3076886), (40, 1538443), (41, 1500920), (82, 750460), (157, 391960), (164, 375230), (205, 300184), (239, 257480), (314, 195980), (328, 187615), (410, 150092), (478, 128740), (628, 97990), (785, 78392), (820, 75046), (956, 64370), (1195, 51496), (1256, 48995), (1570, 39196), (1640, 37523), (1912, 32185), (2390, 25748), (3140, 19598), (4780, 12874), (6280, 9799), (6437, 9560)]