181308820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^3\times {\mathrm{139}}^1$

素因数の和:195

約数の個数: 144

約数和(自身を含む): 490674240

約数和(自身を除く): 309365420

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 121, 139, 140, 154, 196, 220, 242, 245, 278, 308, 385, 484, 490, 539, 556, 605, 695, 770, 847, 973, 980, 1078, 1210, 1331, 1390, 1529, 1540, 1694, 1946, 2156, 2420, 2662, 2695, 2780, 3058, 3388, 3892, 4235, 4865, 5324, 5390, 5929, 6116, 6655, 6811, 7645, 8470, 9317, 9730, 10703, 10780, 11858, 13310, 13622, 15290, 16819, 16940, 18634, 19460, 21406, 23716, 26620, 27244, 29645, 30580, 33638, 34055, 37268, 42812, 46585, 53515, 59290, 65219, 67276, 68110, 74921, 84095, 93170, 107030, 117733, 118580, 130438, 136220, 149842, 168190, 185009, 186340, 214060, 235466, 260876, 299684, 326095, 336380, 370018, 374605, 470932, 588665, 652190, 740036, 749210, 824131, 925045, 1177330, 1295063, 1304380, 1498420, 1648262, 1850090, 2354660, 2590126, 3296524, 3700180, 4120655, 5180252, 6475315, 8241310, 9065441, 12950630, 16482620, 18130882, 25901260, 36261764, 45327205, 90654410, 181308820]

約数ペア:

[(1, 181308820), (2, 90654410), (4, 45327205), (5, 36261764), (7, 25901260), (10, 18130882), (11, 16482620), (14, 12950630), (20, 9065441), (22, 8241310), (28, 6475315), (35, 5180252), (44, 4120655), (49, 3700180), (55, 3296524), (70, 2590126), (77, 2354660), (98, 1850090), (110, 1648262), (121, 1498420), (139, 1304380), (140, 1295063), (154, 1177330), (196, 925045), (220, 824131), (242, 749210), (245, 740036), (278, 652190), (308, 588665), (385, 470932), (484, 374605), (490, 370018), (539, 336380), (556, 326095), (605, 299684), (695, 260876), (770, 235466), (847, 214060), (973, 186340), (980, 185009), (1078, 168190), (1210, 149842), (1331, 136220), (1390, 130438), (1529, 118580), (1540, 117733), (1694, 107030), (1946, 93170), (2156, 84095), (2420, 74921), (2662, 68110), (2695, 67276), (2780, 65219), (3058, 59290), (3388, 53515), (3892, 46585), (4235, 42812), (4865, 37268), (5324, 34055), (5390, 33638), (5929, 30580), (6116, 29645), (6655, 27244), (6811, 26620), (7645, 23716), (8470, 21406), (9317, 19460), (9730, 18634), (10703, 16940), (10780, 16819), (11858, 15290), (13310, 13622)]