205041900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{389}}^1$

素因数の和:664

約数の個数: 144

約数和(自身を含む): 682456320

約数和(自身を除く): 477414420

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 251, 300, 350, 389, 420, 502, 525, 700, 753, 778, 1004, 1050, 1167, 1255, 1506, 1556, 1757, 1945, 2100, 2334, 2510, 2723, 3012, 3514, 3765, 3890, 4668, 5020, 5271, 5446, 5835, 6275, 7028, 7530, 7780, 8169, 8785, 9725, 10542, 10892, 11670, 12550, 13615, 15060, 16338, 17570, 18825, 19450, 21084, 23340, 25100, 26355, 27230, 29175, 32676, 35140, 37650, 38900, 40845, 43925, 52710, 54460, 58350, 68075, 75300, 81690, 87850, 97639, 105420, 116700, 131775, 136150, 163380, 175700, 195278, 204225, 263550, 272300, 292917, 390556, 408450, 488195, 527100, 585834, 683473, 816900, 976390, 1171668, 1366946, 1464585, 1952780, 2050419, 2440975, 2733892, 2929170, 3417365, 4100838, 4881950, 5858340, 6834730, 7322925, 8201676, 9763900, 10252095, 13669460, 14645850, 17086825, 20504190, 29291700, 34173650, 41008380, 51260475, 68347300, 102520950, 205041900]

約数ペア:

[(1, 205041900), (2, 102520950), (3, 68347300), (4, 51260475), (5, 41008380), (6, 34173650), (7, 29291700), (10, 20504190), (12, 17086825), (14, 14645850), (15, 13669460), (20, 10252095), (21, 9763900), (25, 8201676), (28, 7322925), (30, 6834730), (35, 5858340), (42, 4881950), (50, 4100838), (60, 3417365), (70, 2929170), (75, 2733892), (84, 2440975), (100, 2050419), (105, 1952780), (140, 1464585), (150, 1366946), (175, 1171668), (210, 976390), (251, 816900), (300, 683473), (350, 585834), (389, 527100), (420, 488195), (502, 408450), (525, 390556), (700, 292917), (753, 272300), (778, 263550), (1004, 204225), (1050, 195278), (1167, 175700), (1255, 163380), (1506, 136150), (1556, 131775), (1757, 116700), (1945, 105420), (2100, 97639), (2334, 87850), (2510, 81690), (2723, 75300), (3012, 68075), (3514, 58350), (3765, 54460), (3890, 52710), (4668, 43925), (5020, 40845), (5271, 38900), (5446, 37650), (5835, 35140), (6275, 32676), (7028, 29175), (7530, 27230), (7780, 26355), (8169, 25100), (8785, 23340), (9725, 21084), (10542, 19450), (10892, 18825), (11670, 17570), (12550, 16338), (13615, 15060)]