20218551415

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{613}}^1$

素因数の和:856

約数の個数: 64

約数和(自身を含む): 26736998400

約数和(自身を除く): 6518446985

約数列:

[1, 5, 19, 47, 83, 89, 95, 235, 415, 445, 613, 893, 1577, 1691, 3065, 3901, 4183, 4465, 7387, 7885, 8455, 11647, 19505, 20915, 28811, 36935, 50879, 54557, 58235, 74119, 79477, 140353, 144055, 254395, 272785, 347189, 370595, 397385, 547409, 701765, 966701, 1036583, 1735945, 2391313, 2564179, 2737045, 4528231, 4833505, 5182915, 6596591, 11956565, 12820895, 22641155, 32982955, 45434947, 48719401, 86036389, 212826857, 227174735, 243597005, 430181945, 1064134285, 4043710283, 20218551415]

約数ペア:

[(1, 20218551415), (5, 4043710283), (19, 1064134285), (47, 430181945), (83, 243597005), (89, 227174735), (95, 212826857), (235, 86036389), (415, 48719401), (445, 45434947), (613, 32982955), (893, 22641155), (1577, 12820895), (1691, 11956565), (3065, 6596591), (3901, 5182915), (4183, 4833505), (4465, 4528231), (7387, 2737045), (7885, 2564179), (8455, 2391313), (11647, 1735945), (19505, 1036583), (20915, 966701), (28811, 701765), (36935, 547409), (50879, 397385), (54557, 370595), (58235, 347189), (74119, 272785), (79477, 254395), (140353, 144055)]