21547908

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 58319352

約数和(自身を除く): 36771444

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 137, 153, 204, 257, 274, 306, 411, 514, 548, 612, 771, 822, 1028, 1233, 1542, 1644, 2313, 2329, 2466, 3084, 4369, 4626, 4658, 4932, 6987, 8738, 9252, 9316, 13107, 13974, 17476, 20961, 26214, 27948, 35209, 39321, 41922, 52428, 70418, 78642, 83844, 105627, 140836, 157284, 211254, 316881, 422508, 598553, 633762, 1197106, 1267524, 1795659, 2394212, 3591318, 5386977, 7182636, 10773954, 21547908]

約数ペア:

[(1, 21547908), (2, 10773954), (3, 7182636), (4, 5386977), (6, 3591318), (9, 2394212), (12, 1795659), (17, 1267524), (18, 1197106), (34, 633762), (36, 598553), (51, 422508), (68, 316881), (102, 211254), (137, 157284), (153, 140836), (204, 105627), (257, 83844), (274, 78642), (306, 70418), (411, 52428), (514, 41922), (548, 39321), (612, 35209), (771, 27948), (822, 26214), (1028, 20961), (1233, 17476), (1542, 13974), (1644, 13107), (2313, 9316), (2329, 9252), (2466, 8738), (3084, 6987), (4369, 4932), (4626, 4658)]