2017778105

素因数分解:

$5^1\times 7^3\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:439

約数の個数: 64

約数和(自身を含む): 2923776000

約数和(自身を除く): 905997895

約数列:

[1, 5, 7, 35, 49, 53, 79, 245, 265, 281, 343, 371, 395, 553, 1405, 1715, 1855, 1967, 2597, 2765, 3871, 4187, 9835, 12985, 13769, 14893, 18179, 19355, 20935, 22199, 27097, 29309, 68845, 74465, 90895, 96383, 104251, 110995, 135485, 146545, 155393, 205163, 481915, 521255, 729757, 776965, 1025815, 1087751, 1176547, 1436141, 3648785, 5108299, 5438755, 5882735, 7180705, 7614257, 8235829, 25541495, 38071285, 41179145, 57650803, 288254015, 403555621, 2017778105]

約数ペア:

[(1, 2017778105), (5, 403555621), (7, 288254015), (35, 57650803), (49, 41179145), (53, 38071285), (79, 25541495), (245, 8235829), (265, 7614257), (281, 7180705), (343, 5882735), (371, 5438755), (395, 5108299), (553, 3648785), (1405, 1436141), (1715, 1176547), (1855, 1087751), (1967, 1025815), (2597, 776965), (2765, 729757), (3871, 521255), (4187, 481915), (9835, 205163), (12985, 155393), (13769, 146545), (14893, 135485), (18179, 110995), (19355, 104251), (20935, 96383), (22199, 90895), (27097, 74465), (29309, 68845)]