161081620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 426323520

約数和(自身を除く): 265241900

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, 211, 245, 266, 287, 380, 410, 422, 490, 532, 574, 665, 779, 820, 844, 931, 980, 1055, 1148, 1330, 1435, 1477, 1558, 1862, 2009, 2110, 2660, 2870, 2954, 3116, 3724, 3895, 4009, 4018, 4220, 4655, 5453, 5740, 5908, 7385, 7790, 8018, 8036, 8651, 9310, 10045, 10339, 10906, 14770, 15580, 16036, 17302, 18620, 20045, 20090, 20678, 21812, 27265, 28063, 29540, 34604, 38171, 40090, 40180, 41356, 43255, 51695, 54530, 56126, 60557, 76342, 80180, 86510, 103390, 109060, 112252, 121114, 140315, 152684, 164369, 173020, 190855, 196441, 206780, 242228, 280630, 302785, 328738, 381710, 392882, 423899, 561260, 605570, 657476, 763420, 785764, 821845, 847798, 982205, 1150583, 1211140, 1643690, 1695596, 1964410, 2119495, 2301166, 3287380, 3928820, 4238990, 4602332, 5752915, 8054081, 8477980, 11505830, 16108162, 23011660, 32216324, 40270405, 80540810, 161081620]

約数ペア:

[(1, 161081620), (2, 80540810), (4, 40270405), (5, 32216324), (7, 23011660), (10, 16108162), (14, 11505830), (19, 8477980), (20, 8054081), (28, 5752915), (35, 4602332), (38, 4238990), (41, 3928820), (49, 3287380), (70, 2301166), (76, 2119495), (82, 1964410), (95, 1695596), (98, 1643690), (133, 1211140), (140, 1150583), (164, 982205), (190, 847798), (196, 821845), (205, 785764), (211, 763420), (245, 657476), (266, 605570), (287, 561260), (380, 423899), (410, 392882), (422, 381710), (490, 328738), (532, 302785), (574, 280630), (665, 242228), (779, 206780), (820, 196441), (844, 190855), (931, 173020), (980, 164369), (1055, 152684), (1148, 140315), (1330, 121114), (1435, 112252), (1477, 109060), (1558, 103390), (1862, 86510), (2009, 80180), (2110, 76342), (2660, 60557), (2870, 56126), (2954, 54530), (3116, 51695), (3724, 43255), (3895, 41356), (4009, 40180), (4018, 40090), (4220, 38171), (4655, 34604), (5453, 29540), (5740, 28063), (5908, 27265), (7385, 21812), (7790, 20678), (8018, 20090), (8036, 20045), (8651, 18620), (9310, 17302), (10045, 16036), (10339, 15580), (10906, 14770)]