664190980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{479}}^1$

素因数の和:637

約数の個数: 96

約数和(自身を含む): 1524096000

約数和(自身を除く): 859905020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 89, 95, 164, 178, 190, 205, 356, 380, 410, 445, 479, 779, 820, 890, 958, 1558, 1691, 1780, 1916, 2395, 3116, 3382, 3649, 3895, 4790, 6764, 7298, 7790, 8455, 9101, 9580, 14596, 15580, 16910, 18202, 18245, 19639, 33820, 36404, 36490, 39278, 42631, 45505, 69331, 72980, 78556, 85262, 91010, 98195, 138662, 170524, 182020, 196390, 213155, 277324, 346655, 373141, 392780, 426310, 693310, 746282, 809989, 852620, 1386620, 1492564, 1619978, 1747871, 1865705, 3239956, 3495742, 3731410, 4049945, 6991484, 7462820, 8099890, 8739355, 16199780, 17478710, 33209549, 34957420, 66419098, 132838196, 166047745, 332095490, 664190980]

約数ペア:

[(1, 664190980), (2, 332095490), (4, 166047745), (5, 132838196), (10, 66419098), (19, 34957420), (20, 33209549), (38, 17478710), (41, 16199780), (76, 8739355), (82, 8099890), (89, 7462820), (95, 6991484), (164, 4049945), (178, 3731410), (190, 3495742), (205, 3239956), (356, 1865705), (380, 1747871), (410, 1619978), (445, 1492564), (479, 1386620), (779, 852620), (820, 809989), (890, 746282), (958, 693310), (1558, 426310), (1691, 392780), (1780, 373141), (1916, 346655), (2395, 277324), (3116, 213155), (3382, 196390), (3649, 182020), (3895, 170524), (4790, 138662), (6764, 98195), (7298, 91010), (7790, 85262), (8455, 78556), (9101, 72980), (9580, 69331), (14596, 45505), (15580, 42631), (16910, 39278), (18202, 36490), (18245, 36404), (19639, 33820)]