21817980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2287}}^1$

素因数の和:2355

約数の個数: 72

約数和(自身を含む): 67459392

約数和(自身を除く): 45641412

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2287, 2385, 3180, 4574, 4770, 6861, 9148, 9540, 11435, 13722, 20583, 22870, 27444, 34305, 41166, 45740, 68610, 82332, 102915, 121211, 137220, 205830, 242422, 363633, 411660, 484844, 606055, 727266, 1090899, 1212110, 1454532, 1818165, 2181798, 2424220, 3636330, 4363596, 5454495, 7272660, 10908990, 21817980]

約数ペア:

[(1, 21817980), (2, 10908990), (3, 7272660), (4, 5454495), (5, 4363596), (6, 3636330), (9, 2424220), (10, 2181798), (12, 1818165), (15, 1454532), (18, 1212110), (20, 1090899), (30, 727266), (36, 606055), (45, 484844), (53, 411660), (60, 363633), (90, 242422), (106, 205830), (159, 137220), (180, 121211), (212, 102915), (265, 82332), (318, 68610), (477, 45740), (530, 41166), (636, 34305), (795, 27444), (954, 22870), (1060, 20583), (1590, 13722), (1908, 11435), (2287, 9540), (2385, 9148), (3180, 6861), (4574, 4770)]