20280079040

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{17989}}^1$

素因数の和:18290

約数の個数: 112

約数和(自身を含む): 52201511040

約数和(自身を除く): 31921432000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 271, 320, 416, 520, 542, 832, 1040, 1084, 1355, 2080, 2168, 2710, 3523, 4160, 4336, 5420, 7046, 8672, 10840, 14092, 17344, 17615, 17989, 21680, 28184, 35230, 35978, 43360, 56368, 70460, 71956, 86720, 89945, 112736, 140920, 143912, 179890, 225472, 233857, 281840, 287824, 359780, 467714, 563680, 575648, 719560, 935428, 1127360, 1151296, 1169285, 1439120, 1870856, 2338570, 2878240, 3741712, 4677140, 4875019, 5756480, 7483424, 9354280, 9750038, 14966848, 18708560, 19500076, 24375095, 37417120, 39000152, 48750190, 63375247, 74834240, 78000304, 97500380, 126750494, 156000608, 195000760, 253500988, 312001216, 316876235, 390001520, 507001976, 633752470, 780003040, 1014003952, 1267504940, 1560006080, 2028007904, 2535009880, 4056015808, 5070019760, 10140039520, 20280079040]

約数ペア:

[(1, 20280079040), (2, 10140039520), (4, 5070019760), (5, 4056015808), (8, 2535009880), (10, 2028007904), (13, 1560006080), (16, 1267504940), (20, 1014003952), (26, 780003040), (32, 633752470), (40, 507001976), (52, 390001520), (64, 316876235), (65, 312001216), (80, 253500988), (104, 195000760), (130, 156000608), (160, 126750494), (208, 97500380), (260, 78000304), (271, 74834240), (320, 63375247), (416, 48750190), (520, 39000152), (542, 37417120), (832, 24375095), (1040, 19500076), (1084, 18708560), (1355, 14966848), (2080, 9750038), (2168, 9354280), (2710, 7483424), (3523, 5756480), (4160, 4875019), (4336, 4677140), (5420, 3741712), (7046, 2878240), (8672, 2338570), (10840, 1870856), (14092, 1439120), (17344, 1169285), (17615, 1151296), (17989, 1127360), (21680, 935428), (28184, 719560), (35230, 575648), (35978, 563680), (43360, 467714), (56368, 359780), (70460, 287824), (71956, 281840), (86720, 233857), (89945, 225472), (112736, 179890), (140920, 143912)]