21678800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1$

素因数の和:421

約数の個数: 120

約数和(自身を含む): 61350240

約数和(自身を除く): 39671440

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 176, 200, 208, 220, 260, 275, 286, 325, 379, 400, 440, 520, 550, 572, 650, 715, 758, 880, 1040, 1100, 1144, 1300, 1430, 1516, 1895, 2200, 2288, 2600, 2860, 3032, 3575, 3790, 4169, 4400, 4927, 5200, 5720, 6064, 7150, 7580, 8338, 9475, 9854, 11440, 14300, 15160, 16676, 18950, 19708, 20845, 24635, 28600, 30320, 33352, 37900, 39416, 41690, 49270, 54197, 57200, 66704, 75800, 78832, 83380, 98540, 104225, 108394, 123175, 151600, 166760, 197080, 208450, 216788, 246350, 270985, 333520, 394160, 416900, 433576, 492700, 541970, 833800, 867152, 985400, 1083940, 1354925, 1667600, 1970800, 2167880, 2709850, 4335760, 5419700, 10839400, 21678800]

約数ペア:

[(1, 21678800), (2, 10839400), (4, 5419700), (5, 4335760), (8, 2709850), (10, 2167880), (11, 1970800), (13, 1667600), (16, 1354925), (20, 1083940), (22, 985400), (25, 867152), (26, 833800), (40, 541970), (44, 492700), (50, 433576), (52, 416900), (55, 394160), (65, 333520), (80, 270985), (88, 246350), (100, 216788), (104, 208450), (110, 197080), (130, 166760), (143, 151600), (176, 123175), (200, 108394), (208, 104225), (220, 98540), (260, 83380), (275, 78832), (286, 75800), (325, 66704), (379, 57200), (400, 54197), (440, 49270), (520, 41690), (550, 39416), (572, 37900), (650, 33352), (715, 30320), (758, 28600), (880, 24635), (1040, 20845), (1100, 19708), (1144, 18950), (1300, 16676), (1430, 15160), (1516, 14300), (1895, 11440), (2200, 9854), (2288, 9475), (2600, 8338), (2860, 7580), (3032, 7150), (3575, 6064), (3790, 5720), (4169, 5200), (4400, 4927)]