19768980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{389}}^1$

素因数の和:430

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 49944300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 121, 132, 140, 154, 165, 210, 220, 231, 242, 308, 330, 363, 385, 389, 420, 462, 484, 605, 660, 726, 770, 778, 847, 924, 1155, 1167, 1210, 1452, 1540, 1556, 1694, 1815, 1945, 2310, 2334, 2420, 2541, 2723, 3388, 3630, 3890, 4235, 4279, 4620, 4668, 5082, 5446, 5835, 7260, 7780, 8169, 8470, 8558, 10164, 10892, 11670, 12705, 12837, 13615, 16338, 16940, 17116, 21395, 23340, 25410, 25674, 27230, 29953, 32676, 40845, 42790, 47069, 50820, 51348, 54460, 59906, 64185, 81690, 85580, 89859, 94138, 119812, 128370, 141207, 149765, 163380, 179718, 188276, 235345, 256740, 282414, 299530, 329483, 359436, 449295, 470690, 564828, 599060, 658966, 706035, 898590, 941380, 988449, 1317932, 1412070, 1647415, 1797180, 1976898, 2824140, 3294830, 3953796, 4942245, 6589660, 9884490, 19768980]

約数ペア:

[(1, 19768980), (2, 9884490), (3, 6589660), (4, 4942245), (5, 3953796), (6, 3294830), (7, 2824140), (10, 1976898), (11, 1797180), (12, 1647415), (14, 1412070), (15, 1317932), (20, 988449), (21, 941380), (22, 898590), (28, 706035), (30, 658966), (33, 599060), (35, 564828), (42, 470690), (44, 449295), (55, 359436), (60, 329483), (66, 299530), (70, 282414), (77, 256740), (84, 235345), (105, 188276), (110, 179718), (121, 163380), (132, 149765), (140, 141207), (154, 128370), (165, 119812), (210, 94138), (220, 89859), (231, 85580), (242, 81690), (308, 64185), (330, 59906), (363, 54460), (385, 51348), (389, 50820), (420, 47069), (462, 42790), (484, 40845), (605, 32676), (660, 29953), (726, 27230), (770, 25674), (778, 25410), (847, 23340), (924, 21395), (1155, 17116), (1167, 16940), (1210, 16338), (1452, 13615), (1540, 12837), (1556, 12705), (1694, 11670), (1815, 10892), (1945, 10164), (2310, 8558), (2334, 8470), (2420, 8169), (2541, 7780), (2723, 7260), (3388, 5835), (3630, 5446), (3890, 5082), (4235, 4668), (4279, 4620)]