919920280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{653}}^1\times {\mathrm{859}}^1$

素因数の和:1564

約数の個数: 64

約数和(自身を含む): 2126023200

約数和(自身を除く): 1206102920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 653, 820, 859, 1306, 1640, 1718, 2612, 3265, 3436, 4295, 5224, 6530, 6872, 8590, 13060, 17180, 26120, 26773, 34360, 35219, 53546, 70438, 107092, 133865, 140876, 176095, 214184, 267730, 281752, 352190, 535460, 560927, 704380, 1070920, 1121854, 1408760, 2243708, 2804635, 4487416, 5609270, 11218540, 22437080, 22998007, 45996014, 91992028, 114990035, 183984056, 229980070, 459960140, 919920280]

約数ペア:

[(1, 919920280), (2, 459960140), (4, 229980070), (5, 183984056), (8, 114990035), (10, 91992028), (20, 45996014), (40, 22998007), (41, 22437080), (82, 11218540), (164, 5609270), (205, 4487416), (328, 2804635), (410, 2243708), (653, 1408760), (820, 1121854), (859, 1070920), (1306, 704380), (1640, 560927), (1718, 535460), (2612, 352190), (3265, 281752), (3436, 267730), (4295, 214184), (5224, 176095), (6530, 140876), (6872, 133865), (8590, 107092), (13060, 70438), (17180, 53546), (26120, 35219), (26773, 34360)]