64865707520

素因数分解:

$2^9\times 5^1\times {\mathrm{773}}^1\times {\mathrm{32779}}^1$

素因数の和:33575

約数の個数: 80

約数和(自身を含む): 155731617360

約数和(自身を除く): 90865909840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 773, 1280, 1546, 2560, 3092, 3865, 6184, 7730, 12368, 15460, 24736, 30920, 32779, 49472, 61840, 65558, 98944, 123680, 131116, 163895, 197888, 247360, 262232, 327790, 395776, 494720, 524464, 655580, 989440, 1048928, 1311160, 1978880, 2097856, 2622320, 4195712, 5244640, 8391424, 10489280, 16782848, 20978560, 25338167, 41957120, 50676334, 83914240, 101352668, 126690835, 202705336, 253381670, 405410672, 506763340, 810821344, 1013526680, 1621642688, 2027053360, 3243285376, 4054106720, 6486570752, 8108213440, 12973141504, 16216426880, 32432853760, 64865707520]

約数ペア:

[(1, 64865707520), (2, 32432853760), (4, 16216426880), (5, 12973141504), (8, 8108213440), (10, 6486570752), (16, 4054106720), (20, 3243285376), (32, 2027053360), (40, 1621642688), (64, 1013526680), (80, 810821344), (128, 506763340), (160, 405410672), (256, 253381670), (320, 202705336), (512, 126690835), (640, 101352668), (773, 83914240), (1280, 50676334), (1546, 41957120), (2560, 25338167), (3092, 20978560), (3865, 16782848), (6184, 10489280), (7730, 8391424), (12368, 5244640), (15460, 4195712), (24736, 2622320), (30920, 2097856), (32779, 1978880), (49472, 1311160), (61840, 1048928), (65558, 989440), (98944, 655580), (123680, 524464), (131116, 494720), (163895, 395776), (197888, 327790), (247360, 262232)]