400012560

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1699}}^1$

素因数の和:1830

約数の個数: 160

約数和(自身を含む): 1391280000

約数和(自身を除く): 991267440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 109, 120, 135, 144, 180, 216, 218, 240, 270, 327, 360, 432, 436, 540, 545, 654, 720, 872, 981, 1080, 1090, 1308, 1635, 1699, 1744, 1962, 2160, 2180, 2616, 2943, 3270, 3398, 3924, 4360, 4905, 5097, 5232, 5886, 6540, 6796, 7848, 8495, 8720, 9810, 10194, 11772, 13080, 13592, 14715, 15291, 15696, 16990, 19620, 20388, 23544, 25485, 26160, 27184, 29430, 30582, 33980, 39240, 40776, 45873, 47088, 50970, 58860, 61164, 67960, 76455, 78480, 81552, 91746, 101940, 117720, 122328, 135920, 152910, 183492, 185191, 203880, 229365, 235440, 244656, 305820, 366984, 370382, 407760, 458730, 555573, 611640, 733968, 740764, 917460, 925955, 1111146, 1223280, 1481528, 1666719, 1834920, 1851910, 2222292, 2777865, 2963056, 3333438, 3669840, 3703820, 4444584, 5000157, 5555730, 6666876, 7407640, 8333595, 8889168, 10000314, 11111460, 13333752, 14815280, 16667190, 20000628, 22222920, 25000785, 26667504, 33334380, 40001256, 44445840, 50001570, 66668760, 80002512, 100003140, 133337520, 200006280, 400012560]

約数ペア:

[(1, 400012560), (2, 200006280), (3, 133337520), (4, 100003140), (5, 80002512), (6, 66668760), (8, 50001570), (9, 44445840), (10, 40001256), (12, 33334380), (15, 26667504), (16, 25000785), (18, 22222920), (20, 20000628), (24, 16667190), (27, 14815280), (30, 13333752), (36, 11111460), (40, 10000314), (45, 8889168), (48, 8333595), (54, 7407640), (60, 6666876), (72, 5555730), (80, 5000157), (90, 4444584), (108, 3703820), (109, 3669840), (120, 3333438), (135, 2963056), (144, 2777865), (180, 2222292), (216, 1851910), (218, 1834920), (240, 1666719), (270, 1481528), (327, 1223280), (360, 1111146), (432, 925955), (436, 917460), (540, 740764), (545, 733968), (654, 611640), (720, 555573), (872, 458730), (981, 407760), (1080, 370382), (1090, 366984), (1308, 305820), (1635, 244656), (1699, 235440), (1744, 229365), (1962, 203880), (2160, 185191), (2180, 183492), (2616, 152910), (2943, 135920), (3270, 122328), (3398, 117720), (3924, 101940), (4360, 91746), (4905, 81552), (5097, 78480), (5232, 76455), (5886, 67960), (6540, 61164), (6796, 58860), (7848, 50970), (8495, 47088), (8720, 45873), (9810, 40776), (10194, 39240), (11772, 33980), (13080, 30582), (13592, 29430), (14715, 27184), (15291, 26160), (15696, 25485), (16990, 23544), (19620, 20388)]