21373880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1567}}^1$

素因数の和:1620

約数の個数: 64

約数和(自身を含む): 54190080

約数和(自身を除く): 32816200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1567, 1705, 2728, 3134, 3410, 6268, 6820, 7835, 12536, 13640, 15670, 17237, 31340, 34474, 48577, 62680, 68948, 86185, 97154, 137896, 172370, 194308, 242885, 344740, 388616, 485770, 534347, 689480, 971540, 1068694, 1943080, 2137388, 2671735, 4274776, 5343470, 10686940, 21373880]

約数ペア:

[(1, 21373880), (2, 10686940), (4, 5343470), (5, 4274776), (8, 2671735), (10, 2137388), (11, 1943080), (20, 1068694), (22, 971540), (31, 689480), (40, 534347), (44, 485770), (55, 388616), (62, 344740), (88, 242885), (110, 194308), (124, 172370), (155, 137896), (220, 97154), (248, 86185), (310, 68948), (341, 62680), (440, 48577), (620, 34474), (682, 31340), (1240, 17237), (1364, 15670), (1567, 13640), (1705, 12536), (2728, 7835), (3134, 6820), (3410, 6268)]