20380500

素因数分解:

$2^2\times 3^2\times 5^3\times 7^1\times {\mathrm{647}}^1$

素因数の和:679

約数の個数: 144

約数和(自身を含む): 73592064

約数和(自身を除く): 53211564

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 125, 126, 140, 150, 175, 180, 210, 225, 250, 252, 300, 315, 350, 375, 420, 450, 500, 525, 630, 647, 700, 750, 875, 900, 1050, 1125, 1260, 1294, 1500, 1575, 1750, 1941, 2100, 2250, 2588, 2625, 3150, 3235, 3500, 3882, 4500, 4529, 5250, 5823, 6300, 6470, 7764, 7875, 9058, 9705, 10500, 11646, 12940, 13587, 15750, 16175, 18116, 19410, 22645, 23292, 27174, 29115, 31500, 32350, 38820, 40761, 45290, 48525, 54348, 58230, 64700, 67935, 80875, 81522, 90580, 97050, 113225, 116460, 135870, 145575, 161750, 163044, 194100, 203805, 226450, 242625, 271740, 291150, 323500, 339675, 407610, 452900, 485250, 566125, 582300, 679350, 727875, 815220, 970500, 1019025, 1132250, 1358700, 1455750, 1698375, 2038050, 2264500, 2911500, 3396750, 4076100, 5095125, 6793500, 10190250, 20380500]

約数ペア:

[(1, 20380500), (2, 10190250), (3, 6793500), (4, 5095125), (5, 4076100), (6, 3396750), (7, 2911500), (9, 2264500), (10, 2038050), (12, 1698375), (14, 1455750), (15, 1358700), (18, 1132250), (20, 1019025), (21, 970500), (25, 815220), (28, 727875), (30, 679350), (35, 582300), (36, 566125), (42, 485250), (45, 452900), (50, 407610), (60, 339675), (63, 323500), (70, 291150), (75, 271740), (84, 242625), (90, 226450), (100, 203805), (105, 194100), (125, 163044), (126, 161750), (140, 145575), (150, 135870), (175, 116460), (180, 113225), (210, 97050), (225, 90580), (250, 81522), (252, 80875), (300, 67935), (315, 64700), (350, 58230), (375, 54348), (420, 48525), (450, 45290), (500, 40761), (525, 38820), (630, 32350), (647, 31500), (700, 29115), (750, 27174), (875, 23292), (900, 22645), (1050, 19410), (1125, 18116), (1260, 16175), (1294, 15750), (1500, 13587), (1575, 12940), (1750, 11646), (1941, 10500), (2100, 9705), (2250, 9058), (2588, 7875), (2625, 7764), (3150, 6470), (3235, 6300), (3500, 5823), (3882, 5250), (4500, 4529)]