21740800

素因数分解:

$2^8\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:148

約数の個数: 108

約数和(自身を含む): 55760320

約数和(自身を除く): 34019520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 64, 79, 80, 86, 100, 128, 158, 160, 172, 200, 215, 256, 316, 320, 344, 395, 400, 430, 632, 640, 688, 790, 800, 860, 1075, 1264, 1280, 1376, 1580, 1600, 1720, 1975, 2150, 2528, 2752, 3160, 3200, 3397, 3440, 3950, 4300, 5056, 5504, 6320, 6400, 6794, 6880, 7900, 8600, 10112, 11008, 12640, 13588, 13760, 15800, 16985, 17200, 20224, 25280, 27176, 27520, 31600, 33970, 34400, 50560, 54352, 55040, 63200, 67940, 68800, 84925, 101120, 108704, 126400, 135880, 137600, 169850, 217408, 252800, 271760, 275200, 339700, 434816, 505600, 543520, 679400, 869632, 1087040, 1358800, 2174080, 2717600, 4348160, 5435200, 10870400, 21740800]

約数ペア:

[(1, 21740800), (2, 10870400), (4, 5435200), (5, 4348160), (8, 2717600), (10, 2174080), (16, 1358800), (20, 1087040), (25, 869632), (32, 679400), (40, 543520), (43, 505600), (50, 434816), (64, 339700), (79, 275200), (80, 271760), (86, 252800), (100, 217408), (128, 169850), (158, 137600), (160, 135880), (172, 126400), (200, 108704), (215, 101120), (256, 84925), (316, 68800), (320, 67940), (344, 63200), (395, 55040), (400, 54352), (430, 50560), (632, 34400), (640, 33970), (688, 31600), (790, 27520), (800, 27176), (860, 25280), (1075, 20224), (1264, 17200), (1280, 16985), (1376, 15800), (1580, 13760), (1600, 13588), (1720, 12640), (1975, 11008), (2150, 10112), (2528, 8600), (2752, 7900), (3160, 6880), (3200, 6794), (3397, 6400), (3440, 6320), (3950, 5504), (4300, 5056)]