20087540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 50295168

約数和(自身を除く): 30207628

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 41, 44, 55, 68, 82, 85, 110, 131, 164, 170, 187, 205, 220, 262, 340, 374, 410, 451, 524, 655, 697, 748, 820, 902, 935, 1310, 1394, 1441, 1804, 1870, 2227, 2255, 2620, 2788, 2882, 3485, 3740, 4454, 4510, 5371, 5764, 6970, 7205, 7667, 8908, 9020, 10742, 11135, 13940, 14410, 15334, 21484, 22270, 24497, 26855, 28820, 30668, 38335, 44540, 48994, 53710, 59081, 76670, 91307, 97988, 107420, 118162, 122485, 153340, 182614, 236324, 244970, 295405, 365228, 456535, 489940, 590810, 913070, 1004377, 1181620, 1826140, 2008754, 4017508, 5021885, 10043770, 20087540]

約数ペア:

[(1, 20087540), (2, 10043770), (4, 5021885), (5, 4017508), (10, 2008754), (11, 1826140), (17, 1181620), (20, 1004377), (22, 913070), (34, 590810), (41, 489940), (44, 456535), (55, 365228), (68, 295405), (82, 244970), (85, 236324), (110, 182614), (131, 153340), (164, 122485), (170, 118162), (187, 107420), (205, 97988), (220, 91307), (262, 76670), (340, 59081), (374, 53710), (410, 48994), (451, 44540), (524, 38335), (655, 30668), (697, 28820), (748, 26855), (820, 24497), (902, 22270), (935, 21484), (1310, 15334), (1394, 14410), (1441, 13940), (1804, 11135), (1870, 10742), (2227, 9020), (2255, 8908), (2620, 7667), (2788, 7205), (2882, 6970), (3485, 5764), (3740, 5371), (4454, 4510)]