21328320

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1709}}^1$

素因数の和:1742

約数の個数: 112

約数和(自身を含む): 72969120

約数和(自身を除く): 51640800

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, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1709, 2080, 2496, 3120, 3418, 4160, 5127, 6240, 6836, 8545, 10254, 12480, 13672, 17090, 20508, 22217, 25635, 27344, 34180, 41016, 44434, 51270, 54688, 66651, 68360, 82032, 88868, 102540, 109376, 111085, 133302, 136720, 164064, 177736, 205080, 222170, 266604, 273440, 328128, 333255, 355472, 410160, 444340, 533208, 546880, 666510, 710944, 820320, 888680, 1066416, 1333020, 1421888, 1640640, 1777360, 2132832, 2666040, 3554720, 4265664, 5332080, 7109440, 10664160, 21328320]

約数ペア:

[(1, 21328320), (2, 10664160), (3, 7109440), (4, 5332080), (5, 4265664), (6, 3554720), (8, 2666040), (10, 2132832), (12, 1777360), (13, 1640640), (15, 1421888), (16, 1333020), (20, 1066416), (24, 888680), (26, 820320), (30, 710944), (32, 666510), (39, 546880), (40, 533208), (48, 444340), (52, 410160), (60, 355472), (64, 333255), (65, 328128), (78, 273440), (80, 266604), (96, 222170), (104, 205080), (120, 177736), (130, 164064), (156, 136720), (160, 133302), (192, 111085), (195, 109376), (208, 102540), (240, 88868), (260, 82032), (312, 68360), (320, 66651), (390, 54688), (416, 51270), (480, 44434), (520, 41016), (624, 34180), (780, 27344), (832, 25635), (960, 22217), (1040, 20508), (1248, 17090), (1560, 13672), (1709, 12480), (2080, 10254), (2496, 8545), (3120, 6836), (3418, 6240), (4160, 5127)]