20920140

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2039}}^1$

素因数の和:2076

約数の個数: 96

約数和(自身を含む): 68544000

約数和(自身を除く): 47623860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 108, 114, 135, 171, 180, 190, 228, 270, 285, 342, 380, 513, 540, 570, 684, 855, 1026, 1140, 1710, 2039, 2052, 2565, 3420, 4078, 5130, 6117, 8156, 10195, 10260, 12234, 18351, 20390, 24468, 30585, 36702, 38741, 40780, 55053, 61170, 73404, 77482, 91755, 110106, 116223, 122340, 154964, 183510, 193705, 220212, 232446, 275265, 348669, 367020, 387410, 464892, 550530, 581115, 697338, 774820, 1046007, 1101060, 1162230, 1394676, 1743345, 2092014, 2324460, 3486690, 4184028, 5230035, 6973380, 10460070, 20920140]

約数ペア:

[(1, 20920140), (2, 10460070), (3, 6973380), (4, 5230035), (5, 4184028), (6, 3486690), (9, 2324460), (10, 2092014), (12, 1743345), (15, 1394676), (18, 1162230), (19, 1101060), (20, 1046007), (27, 774820), (30, 697338), (36, 581115), (38, 550530), (45, 464892), (54, 387410), (57, 367020), (60, 348669), (76, 275265), (90, 232446), (95, 220212), (108, 193705), (114, 183510), (135, 154964), (171, 122340), (180, 116223), (190, 110106), (228, 91755), (270, 77482), (285, 73404), (342, 61170), (380, 55053), (513, 40780), (540, 38741), (570, 36702), (684, 30585), (855, 24468), (1026, 20390), (1140, 18351), (1710, 12234), (2039, 10260), (2052, 10195), (2565, 8156), (3420, 6117), (4078, 5130)]