20033895

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{281}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 37806048

約数和(自身を除く): 17772153

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 97, 105, 147, 245, 281, 291, 485, 679, 735, 843, 1405, 1455, 1967, 2037, 3395, 4215, 4753, 5901, 9835, 10185, 13769, 14259, 23765, 27257, 29505, 41307, 68845, 71295, 81771, 136285, 190799, 206535, 408855, 572397, 953995, 1335593, 2861985, 4006779, 6677965, 20033895]

約数ペア:

[(1, 20033895), (3, 6677965), (5, 4006779), (7, 2861985), (15, 1335593), (21, 953995), (35, 572397), (49, 408855), (97, 206535), (105, 190799), (147, 136285), (245, 81771), (281, 71295), (291, 68845), (485, 41307), (679, 29505), (735, 27257), (843, 23765), (1405, 14259), (1455, 13769), (1967, 10185), (2037, 9835), (3395, 5901), (4215, 4753)]