138880940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:323

約数の個数: 96

約数和(自身を含む): 331490880

約数和(自身を除く): 192609940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 89, 110, 164, 173, 178, 205, 220, 346, 356, 410, 445, 451, 692, 820, 865, 890, 902, 979, 1730, 1780, 1804, 1903, 1958, 2255, 3460, 3649, 3806, 3916, 4510, 4895, 7093, 7298, 7612, 9020, 9515, 9790, 14186, 14596, 15397, 18245, 19030, 19580, 28372, 30794, 35465, 36490, 38060, 40139, 61588, 70930, 72980, 76985, 78023, 80278, 141860, 153970, 156046, 160556, 169367, 200695, 307940, 312092, 338734, 390115, 401390, 631277, 677468, 780230, 802780, 846835, 1262554, 1560460, 1693670, 2525108, 3156385, 3387340, 6312770, 6944047, 12625540, 13888094, 27776188, 34720235, 69440470, 138880940]

約数ペア:

[(1, 138880940), (2, 69440470), (4, 34720235), (5, 27776188), (10, 13888094), (11, 12625540), (20, 6944047), (22, 6312770), (41, 3387340), (44, 3156385), (55, 2525108), (82, 1693670), (89, 1560460), (110, 1262554), (164, 846835), (173, 802780), (178, 780230), (205, 677468), (220, 631277), (346, 401390), (356, 390115), (410, 338734), (445, 312092), (451, 307940), (692, 200695), (820, 169367), (865, 160556), (890, 156046), (902, 153970), (979, 141860), (1730, 80278), (1780, 78023), (1804, 76985), (1903, 72980), (1958, 70930), (2255, 61588), (3460, 40139), (3649, 38060), (3806, 36490), (3916, 35465), (4510, 30794), (4895, 28372), (7093, 19580), (7298, 19030), (7612, 18245), (9020, 15397), (9515, 14596), (9790, 14186)]