21889920

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{877}}^1$

素因数の和:912

約数の個数: 128

約数和(自身を含む): 75227040

約数和(自身を除く): 53337120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 780, 832, 877, 960, 1040, 1248, 1560, 1664, 1754, 1920, 2080, 2496, 2631, 3120, 3508, 4160, 4385, 4992, 5262, 6240, 7016, 8320, 8770, 10524, 11401, 12480, 13155, 14032, 17540, 21048, 22802, 24960, 26310, 28064, 34203, 35080, 42096, 45604, 52620, 56128, 57005, 68406, 70160, 84192, 91208, 105240, 112256, 114010, 136812, 140320, 168384, 171015, 182416, 210480, 228020, 273624, 280640, 336768, 342030, 364832, 420960, 456040, 547248, 561280, 684060, 729664, 841920, 912080, 1094496, 1368120, 1459328, 1683840, 1824160, 2188992, 2736240, 3648320, 4377984, 5472480, 7296640, 10944960, 21889920]

約数ペア:

[(1, 21889920), (2, 10944960), (3, 7296640), (4, 5472480), (5, 4377984), (6, 3648320), (8, 2736240), (10, 2188992), (12, 1824160), (13, 1683840), (15, 1459328), (16, 1368120), (20, 1094496), (24, 912080), (26, 841920), (30, 729664), (32, 684060), (39, 561280), (40, 547248), (48, 456040), (52, 420960), (60, 364832), (64, 342030), (65, 336768), (78, 280640), (80, 273624), (96, 228020), (104, 210480), (120, 182416), (128, 171015), (130, 168384), (156, 140320), (160, 136812), (192, 114010), (195, 112256), (208, 105240), (240, 91208), (260, 84192), (312, 70160), (320, 68406), (384, 57005), (390, 56128), (416, 52620), (480, 45604), (520, 42096), (624, 35080), (640, 34203), (780, 28064), (832, 26310), (877, 24960), (960, 22802), (1040, 21048), (1248, 17540), (1560, 14032), (1664, 13155), (1754, 12480), (1920, 11401), (2080, 10524), (2496, 8770), (2631, 8320), (3120, 7016), (3508, 6240), (4160, 5262), (4385, 4992)]