20795200

素因数分解:

$2^6\times 5^2\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:380

約数の個数: 84

約数和(自身を含む): 52582572

約数和(自身を除く): 31787372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 64, 80, 82, 100, 160, 164, 200, 205, 317, 320, 328, 400, 410, 634, 656, 800, 820, 1025, 1268, 1312, 1585, 1600, 1640, 2050, 2536, 2624, 3170, 3280, 4100, 5072, 6340, 6560, 7925, 8200, 10144, 12680, 12997, 13120, 15850, 16400, 20288, 25360, 25994, 31700, 32800, 50720, 51988, 63400, 64985, 65600, 101440, 103976, 126800, 129970, 207952, 253600, 259940, 324925, 415904, 507200, 519880, 649850, 831808, 1039760, 1299700, 2079520, 2599400, 4159040, 5198800, 10397600, 20795200]

約数ペア:

[(1, 20795200), (2, 10397600), (4, 5198800), (5, 4159040), (8, 2599400), (10, 2079520), (16, 1299700), (20, 1039760), (25, 831808), (32, 649850), (40, 519880), (41, 507200), (50, 415904), (64, 324925), (80, 259940), (82, 253600), (100, 207952), (160, 129970), (164, 126800), (200, 103976), (205, 101440), (317, 65600), (320, 64985), (328, 63400), (400, 51988), (410, 50720), (634, 32800), (656, 31700), (800, 25994), (820, 25360), (1025, 20288), (1268, 16400), (1312, 15850), (1585, 13120), (1600, 12997), (1640, 12680), (2050, 10144), (2536, 8200), (2624, 7925), (3170, 6560), (3280, 6340), (4100, 5072)]