21553902

素因数分解:

$2^1\times 3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 48803040

約数和(自身を除く): 27249138

約数列:

[1, 2, 3, 6, 9, 18, 29, 58, 87, 157, 174, 261, 263, 314, 471, 522, 526, 789, 942, 1413, 1578, 2367, 2826, 4553, 4734, 7627, 9106, 13659, 15254, 22881, 27318, 40977, 41291, 45762, 68643, 81954, 82582, 123873, 137286, 247746, 371619, 743238, 1197439, 2394878, 3592317, 7184634, 10776951, 21553902]

約数ペア:

[(1, 21553902), (2, 10776951), (3, 7184634), (6, 3592317), (9, 2394878), (18, 1197439), (29, 743238), (58, 371619), (87, 247746), (157, 137286), (174, 123873), (261, 82582), (263, 81954), (314, 68643), (471, 45762), (522, 41291), (526, 40977), (789, 27318), (942, 22881), (1413, 15254), (1578, 13659), (2367, 9106), (2826, 7627), (4553, 4734)]