81749780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{421}}^1$

素因数の和:529

約数の個数: 96

約数和(自身を含む): 209852160

約数和(自身を除く): 128102380

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 73, 76, 95, 133, 140, 146, 190, 266, 292, 365, 380, 421, 511, 532, 665, 730, 842, 1022, 1330, 1387, 1460, 1684, 2044, 2105, 2555, 2660, 2774, 2947, 4210, 5110, 5548, 5894, 6935, 7999, 8420, 9709, 10220, 11788, 13870, 14735, 15998, 19418, 27740, 29470, 30733, 31996, 38836, 39995, 48545, 55993, 58940, 61466, 79990, 97090, 111986, 122932, 153665, 159980, 194180, 215131, 223972, 279965, 307330, 430262, 559930, 583927, 614660, 860524, 1075655, 1119860, 1167854, 2151310, 2335708, 2919635, 4087489, 4302620, 5839270, 8174978, 11678540, 16349956, 20437445, 40874890, 81749780]

約数ペア:

[(1, 81749780), (2, 40874890), (4, 20437445), (5, 16349956), (7, 11678540), (10, 8174978), (14, 5839270), (19, 4302620), (20, 4087489), (28, 2919635), (35, 2335708), (38, 2151310), (70, 1167854), (73, 1119860), (76, 1075655), (95, 860524), (133, 614660), (140, 583927), (146, 559930), (190, 430262), (266, 307330), (292, 279965), (365, 223972), (380, 215131), (421, 194180), (511, 159980), (532, 153665), (665, 122932), (730, 111986), (842, 97090), (1022, 79990), (1330, 61466), (1387, 58940), (1460, 55993), (1684, 48545), (2044, 39995), (2105, 38836), (2555, 31996), (2660, 30733), (2774, 29470), (2947, 27740), (4210, 19418), (5110, 15998), (5548, 14735), (5894, 13870), (6935, 11788), (7999, 10220), (8420, 9709)]