655777780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{859}}^1$

素因数の和:942

約数の個数: 144

約数和(自身を含む): 1729425600

約数和(自身を除く): 1073647820

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 41, 49, 70, 76, 82, 95, 98, 133, 140, 164, 190, 196, 205, 245, 266, 287, 380, 410, 490, 532, 574, 665, 779, 820, 859, 931, 980, 1148, 1330, 1435, 1558, 1718, 1862, 2009, 2660, 2870, 3116, 3436, 3724, 3895, 4018, 4295, 4655, 5453, 5740, 6013, 7790, 8036, 8590, 9310, 10045, 10906, 12026, 15580, 16321, 17180, 18620, 20090, 21812, 24052, 27265, 30065, 32642, 35219, 38171, 40180, 42091, 54530, 60130, 65284, 70438, 76342, 81605, 84182, 109060, 114247, 120260, 140876, 152684, 163210, 168364, 176095, 190855, 210455, 228494, 246533, 326420, 352190, 381710, 420910, 456988, 493066, 571235, 669161, 704380, 763420, 799729, 841820, 986132, 1142470, 1232665, 1338322, 1599458, 1725731, 2284940, 2465330, 2676644, 3198916, 3345805, 3451462, 3998645, 4684127, 4930660, 6691610, 6902924, 7997290, 8628655, 9368254, 13383220, 15994580, 17257310, 18736508, 23420635, 32788889, 34514620, 46841270, 65577778, 93682540, 131155556, 163944445, 327888890, 655777780]

約数ペア:

[(1, 655777780), (2, 327888890), (4, 163944445), (5, 131155556), (7, 93682540), (10, 65577778), (14, 46841270), (19, 34514620), (20, 32788889), (28, 23420635), (35, 18736508), (38, 17257310), (41, 15994580), (49, 13383220), (70, 9368254), (76, 8628655), (82, 7997290), (95, 6902924), (98, 6691610), (133, 4930660), (140, 4684127), (164, 3998645), (190, 3451462), (196, 3345805), (205, 3198916), (245, 2676644), (266, 2465330), (287, 2284940), (380, 1725731), (410, 1599458), (490, 1338322), (532, 1232665), (574, 1142470), (665, 986132), (779, 841820), (820, 799729), (859, 763420), (931, 704380), (980, 669161), (1148, 571235), (1330, 493066), (1435, 456988), (1558, 420910), (1718, 381710), (1862, 352190), (2009, 326420), (2660, 246533), (2870, 228494), (3116, 210455), (3436, 190855), (3724, 176095), (3895, 168364), (4018, 163210), (4295, 152684), (4655, 140876), (5453, 120260), (5740, 114247), (6013, 109060), (7790, 84182), (8036, 81605), (8590, 76342), (9310, 70438), (10045, 65284), (10906, 60130), (12026, 54530), (15580, 42091), (16321, 40180), (17180, 38171), (18620, 35219), (20090, 32642), (21812, 30065), (24052, 27265)]