20405328

素因数分解:

$2^4\times 3^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:284

約数の個数: 80

約数和(自身を含む): 55442880

約数和(自身を除く): 35037552

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 48, 58, 87, 107, 116, 137, 174, 214, 232, 274, 321, 348, 411, 428, 464, 548, 642, 696, 822, 856, 1096, 1284, 1392, 1644, 1712, 2192, 2568, 3103, 3288, 3973, 5136, 6206, 6576, 7946, 9309, 11919, 12412, 14659, 15892, 18618, 23838, 24824, 29318, 31784, 37236, 43977, 47676, 49648, 58636, 63568, 74472, 87954, 95352, 117272, 148944, 175908, 190704, 234544, 351816, 425111, 703632, 850222, 1275333, 1700444, 2550666, 3400888, 5101332, 6801776, 10202664, 20405328]

約数ペア:

[(1, 20405328), (2, 10202664), (3, 6801776), (4, 5101332), (6, 3400888), (8, 2550666), (12, 1700444), (16, 1275333), (24, 850222), (29, 703632), (48, 425111), (58, 351816), (87, 234544), (107, 190704), (116, 175908), (137, 148944), (174, 117272), (214, 95352), (232, 87954), (274, 74472), (321, 63568), (348, 58636), (411, 49648), (428, 47676), (464, 43977), (548, 37236), (642, 31784), (696, 29318), (822, 24824), (856, 23838), (1096, 18618), (1284, 15892), (1392, 14659), (1644, 12412), (1712, 11919), (2192, 9309), (2568, 7946), (3103, 6576), (3288, 6206), (3973, 5136)]