68886890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 138218400

約数和(自身を除く): 69331510

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 89, 145, 157, 170, 178, 290, 314, 445, 493, 785, 890, 986, 1513, 1570, 2465, 2581, 2669, 3026, 4553, 4930, 5162, 5338, 7565, 9106, 12905, 13345, 13973, 15130, 22765, 25810, 26690, 27946, 43877, 45530, 69865, 77401, 87754, 139730, 154802, 219385, 237541, 387005, 405217, 438770, 475082, 774010, 810434, 1187705, 2026085, 2375410, 4052170, 6888689, 13777378, 34443445, 68886890]

約数ペア:

[(1, 68886890), (2, 34443445), (5, 13777378), (10, 6888689), (17, 4052170), (29, 2375410), (34, 2026085), (58, 1187705), (85, 810434), (89, 774010), (145, 475082), (157, 438770), (170, 405217), (178, 387005), (290, 237541), (314, 219385), (445, 154802), (493, 139730), (785, 87754), (890, 77401), (986, 69865), (1513, 45530), (1570, 43877), (2465, 27946), (2581, 26690), (2669, 25810), (3026, 22765), (4553, 15130), (4930, 13973), (5162, 13345), (5338, 12905), (7565, 9106)]