21050640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{173}}^1$

素因数の和:218

約数の個数: 180

約数和(自身を含む): 76993956

約数和(自身を除く): 55943316

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 169, 173, 180, 195, 208, 234, 240, 260, 312, 338, 346, 360, 390, 468, 507, 519, 520, 585, 624, 676, 692, 720, 780, 845, 865, 936, 1014, 1038, 1040, 1170, 1352, 1384, 1521, 1557, 1560, 1690, 1730, 1872, 2028, 2076, 2249, 2340, 2535, 2595, 2704, 2768, 3042, 3114, 3120, 3380, 3460, 4056, 4152, 4498, 4680, 5070, 5190, 6084, 6228, 6747, 6760, 6920, 7605, 7785, 8112, 8304, 8996, 9360, 10140, 10380, 11245, 12168, 12456, 13494, 13520, 13840, 15210, 15570, 17992, 20241, 20280, 20760, 22490, 24336, 24912, 26988, 29237, 30420, 31140, 33735, 35984, 40482, 40560, 41520, 44980, 53976, 58474, 60840, 62280, 67470, 80964, 87711, 89960, 101205, 107952, 116948, 121680, 124560, 134940, 146185, 161928, 175422, 179920, 202410, 233896, 263133, 269880, 292370, 323856, 350844, 404820, 438555, 467792, 526266, 539760, 584740, 701688, 809640, 877110, 1052532, 1169480, 1315665, 1403376, 1619280, 1754220, 2105064, 2338960, 2631330, 3508440, 4210128, 5262660, 7016880, 10525320, 21050640]

約数ペア:

[(1, 21050640), (2, 10525320), (3, 7016880), (4, 5262660), (5, 4210128), (6, 3508440), (8, 2631330), (9, 2338960), (10, 2105064), (12, 1754220), (13, 1619280), (15, 1403376), (16, 1315665), (18, 1169480), (20, 1052532), (24, 877110), (26, 809640), (30, 701688), (36, 584740), (39, 539760), (40, 526266), (45, 467792), (48, 438555), (52, 404820), (60, 350844), (65, 323856), (72, 292370), (78, 269880), (80, 263133), (90, 233896), (104, 202410), (117, 179920), (120, 175422), (130, 161928), (144, 146185), (156, 134940), (169, 124560), (173, 121680), (180, 116948), (195, 107952), (208, 101205), (234, 89960), (240, 87711), (260, 80964), (312, 67470), (338, 62280), (346, 60840), (360, 58474), (390, 53976), (468, 44980), (507, 41520), (519, 40560), (520, 40482), (585, 35984), (624, 33735), (676, 31140), (692, 30420), (720, 29237), (780, 26988), (845, 24912), (865, 24336), (936, 22490), (1014, 20760), (1038, 20280), (1040, 20241), (1170, 17992), (1352, 15570), (1384, 15210), (1521, 13840), (1557, 13520), (1560, 13494), (1690, 12456), (1730, 12168), (1872, 11245), (2028, 10380), (2076, 10140), (2249, 9360), (2340, 8996), (2535, 8304), (2595, 8112), (2704, 7785), (2768, 7605), (3042, 6920), (3114, 6760), (3120, 6747), (3380, 6228), (3460, 6084), (4056, 5190), (4152, 5070), (4498, 4680)]