20921663455

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{191}}^1\times {\mathrm{2659}}^1$

素因数の和:2980

約数の個数: 64

約数和(自身を含む): 31770869760

約数和(自身を除く): 10849206305

約数列:

[1, 5, 7, 11, 35, 55, 77, 107, 191, 385, 535, 749, 955, 1177, 1337, 2101, 2659, 3745, 5885, 6685, 8239, 10505, 13295, 14707, 18613, 20437, 29249, 41195, 73535, 93065, 102185, 143059, 146245, 204743, 224807, 284513, 507869, 715295, 1023715, 1124035, 1422565, 1573649, 1991591, 2539345, 3129643, 3555083, 5586559, 7868245, 9957955, 15648215, 17775415, 21907501, 27932795, 39105913, 54341983, 109537505, 195529565, 271709915, 380393881, 597761813, 1901969405, 2988809065, 4184332691, 20921663455]

約数ペア:

[(1, 20921663455), (5, 4184332691), (7, 2988809065), (11, 1901969405), (35, 597761813), (55, 380393881), (77, 271709915), (107, 195529565), (191, 109537505), (385, 54341983), (535, 39105913), (749, 27932795), (955, 21907501), (1177, 17775415), (1337, 15648215), (2101, 9957955), (2659, 7868245), (3745, 5586559), (5885, 3555083), (6685, 3129643), (8239, 2539345), (10505, 1991591), (13295, 1573649), (14707, 1422565), (18613, 1124035), (20437, 1023715), (29249, 715295), (41195, 507869), (73535, 284513), (93065, 224807), (102185, 204743), (143059, 146245)]