20456495200

素因数分解:

$2^5\times 5^2\times {\mathrm{2851}}^1\times {\mathrm{8969}}^1$

素因数の和:11840

約数の個数: 72

約数和(自身を含む): 49962505320

約数和(自身を除く): 29506010120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 2851, 5702, 8969, 11404, 14255, 17938, 22808, 28510, 35876, 44845, 45616, 57020, 71275, 71752, 89690, 91232, 114040, 142550, 143504, 179380, 224225, 228080, 285100, 287008, 358760, 448450, 456160, 570200, 717520, 896900, 1140400, 1435040, 1793800, 2280800, 3587600, 7175200, 25570619, 51141238, 102282476, 127853095, 204564952, 255706190, 409129904, 511412380, 639265475, 818259808, 1022824760, 1278530950, 2045649520, 2557061900, 4091299040, 5114123800, 10228247600, 20456495200]

約数ペア:

[(1, 20456495200), (2, 10228247600), (4, 5114123800), (5, 4091299040), (8, 2557061900), (10, 2045649520), (16, 1278530950), (20, 1022824760), (25, 818259808), (32, 639265475), (40, 511412380), (50, 409129904), (80, 255706190), (100, 204564952), (160, 127853095), (200, 102282476), (400, 51141238), (800, 25570619), (2851, 7175200), (5702, 3587600), (8969, 2280800), (11404, 1793800), (14255, 1435040), (17938, 1140400), (22808, 896900), (28510, 717520), (35876, 570200), (44845, 456160), (45616, 448450), (57020, 358760), (71275, 287008), (71752, 285100), (89690, 228080), (91232, 224225), (114040, 179380), (142550, 143504)]