20189916

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 53660880

約数和(自身を除く): 33470964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 83, 87, 116, 166, 174, 233, 249, 261, 332, 348, 466, 498, 522, 699, 747, 932, 996, 1044, 1398, 1494, 2097, 2407, 2796, 2988, 4194, 4814, 6757, 7221, 8388, 9628, 13514, 14442, 19339, 20271, 21663, 27028, 28884, 38678, 40542, 43326, 58017, 60813, 77356, 81084, 86652, 116034, 121626, 174051, 232068, 243252, 348102, 560831, 696204, 1121662, 1682493, 2243324, 3364986, 5047479, 6729972, 10094958, 20189916]

約数ペア:

[(1, 20189916), (2, 10094958), (3, 6729972), (4, 5047479), (6, 3364986), (9, 2243324), (12, 1682493), (18, 1121662), (29, 696204), (36, 560831), (58, 348102), (83, 243252), (87, 232068), (116, 174051), (166, 121626), (174, 116034), (233, 86652), (249, 81084), (261, 77356), (332, 60813), (348, 58017), (466, 43326), (498, 40542), (522, 38678), (699, 28884), (747, 27028), (932, 21663), (996, 20271), (1044, 19339), (1398, 14442), (1494, 13514), (2097, 9628), (2407, 8388), (2796, 7221), (2988, 6757), (4194, 4814)]