21654180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2039}}^1$

素因数の和:2113

約数の個数: 72

約数和(自身を含む): 66830400

約数和(自身を除く): 45176220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 2039, 2124, 2655, 3540, 4078, 5310, 6117, 8156, 10195, 10620, 12234, 18351, 20390, 24468, 30585, 36702, 40780, 61170, 73404, 91755, 120301, 122340, 183510, 240602, 360903, 367020, 481204, 601505, 721806, 1082709, 1203010, 1443612, 1804515, 2165418, 2406020, 3609030, 4330836, 5413545, 7218060, 10827090, 21654180]

約数ペア:

[(1, 21654180), (2, 10827090), (3, 7218060), (4, 5413545), (5, 4330836), (6, 3609030), (9, 2406020), (10, 2165418), (12, 1804515), (15, 1443612), (18, 1203010), (20, 1082709), (30, 721806), (36, 601505), (45, 481204), (59, 367020), (60, 360903), (90, 240602), (118, 183510), (177, 122340), (180, 120301), (236, 91755), (295, 73404), (354, 61170), (531, 40780), (590, 36702), (708, 30585), (885, 24468), (1062, 20390), (1180, 18351), (1770, 12234), (2039, 10620), (2124, 10195), (2655, 8156), (3540, 6117), (4078, 5310)]