87972940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4493}}^1$

素因数の和:4602

約数の個数: 48

約数和(自身を含む): 203847840

約数和(自身を除く): 115874900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4493, 4895, 8986, 9790, 17972, 19580, 22465, 44930, 49423, 89860, 98846, 197692, 247115, 399877, 494230, 799754, 988460, 1599508, 1999385, 3998770, 4398647, 7997540, 8797294, 17594588, 21993235, 43986470, 87972940]

約数ペア:

[(1, 87972940), (2, 43986470), (4, 21993235), (5, 17594588), (10, 8797294), (11, 7997540), (20, 4398647), (22, 3998770), (44, 1999385), (55, 1599508), (89, 988460), (110, 799754), (178, 494230), (220, 399877), (356, 247115), (445, 197692), (890, 98846), (979, 89860), (1780, 49423), (1958, 44930), (3916, 22465), (4493, 19580), (4895, 17972), (8986, 9790)]