20561742

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 48107520

約数和(自身を除く): 27545778

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 71, 93, 142, 173, 186, 213, 279, 346, 426, 519, 558, 639, 837, 1038, 1278, 1557, 1674, 1917, 2201, 3114, 3834, 4402, 4671, 5363, 6603, 9342, 10726, 12283, 13206, 16089, 19809, 24566, 32178, 36849, 39618, 48267, 59427, 73698, 96534, 110547, 118854, 144801, 221094, 289602, 331641, 380773, 663282, 761546, 1142319, 2284638, 3426957, 6853914, 10280871, 20561742]

約数ペア:

[(1, 20561742), (2, 10280871), (3, 6853914), (6, 3426957), (9, 2284638), (18, 1142319), (27, 761546), (31, 663282), (54, 380773), (62, 331641), (71, 289602), (93, 221094), (142, 144801), (173, 118854), (186, 110547), (213, 96534), (279, 73698), (346, 59427), (426, 48267), (519, 39618), (558, 36849), (639, 32178), (837, 24566), (1038, 19809), (1278, 16089), (1557, 13206), (1674, 12283), (1917, 10726), (2201, 9342), (3114, 6603), (3834, 5363), (4402, 4671)]