20840742

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:95

約数の個数: 96

約数和(自身を含む): 53464320

約数和(自身を除く): 32623578

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 31, 34, 39, 51, 62, 78, 93, 102, 117, 153, 169, 186, 221, 234, 279, 306, 338, 403, 442, 507, 527, 558, 663, 806, 1014, 1054, 1209, 1326, 1521, 1581, 1989, 2197, 2418, 2873, 3042, 3162, 3627, 3978, 4394, 4743, 5239, 5746, 6591, 6851, 7254, 8619, 9486, 10478, 13182, 13702, 15717, 17238, 19773, 20553, 25857, 31434, 37349, 39546, 41106, 47151, 51714, 61659, 68107, 74698, 89063, 94302, 112047, 123318, 136214, 178126, 204321, 224094, 267189, 336141, 408642, 534378, 612963, 672282, 801567, 1157819, 1225926, 1603134, 2315638, 3473457, 6946914, 10420371, 20840742]

約数ペア:

[(1, 20840742), (2, 10420371), (3, 6946914), (6, 3473457), (9, 2315638), (13, 1603134), (17, 1225926), (18, 1157819), (26, 801567), (31, 672282), (34, 612963), (39, 534378), (51, 408642), (62, 336141), (78, 267189), (93, 224094), (102, 204321), (117, 178126), (153, 136214), (169, 123318), (186, 112047), (221, 94302), (234, 89063), (279, 74698), (306, 68107), (338, 61659), (403, 51714), (442, 47151), (507, 41106), (527, 39546), (558, 37349), (663, 31434), (806, 25857), (1014, 20553), (1054, 19773), (1209, 17238), (1326, 15717), (1521, 13702), (1581, 13182), (1989, 10478), (2197, 9486), (2418, 8619), (2873, 7254), (3042, 6851), (3162, 6591), (3627, 5746), (3978, 5239), (4394, 4743)]