8666140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:299

約数の個数: 72

約数和(自身を含む): 21833280

約数和(自身を除く): 13167140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 239, 245, 259, 370, 478, 490, 518, 740, 956, 980, 1036, 1195, 1295, 1673, 1813, 2390, 2590, 3346, 3626, 4780, 5180, 6692, 7252, 8365, 8843, 9065, 11711, 16730, 17686, 18130, 23422, 33460, 35372, 36260, 44215, 46844, 58555, 61901, 88430, 117110, 123802, 176860, 234220, 247604, 309505, 433307, 619010, 866614, 1238020, 1733228, 2166535, 4333070, 8666140]

約数ペア:

[(1, 8666140), (2, 4333070), (4, 2166535), (5, 1733228), (7, 1238020), (10, 866614), (14, 619010), (20, 433307), (28, 309505), (35, 247604), (37, 234220), (49, 176860), (70, 123802), (74, 117110), (98, 88430), (140, 61901), (148, 58555), (185, 46844), (196, 44215), (239, 36260), (245, 35372), (259, 33460), (370, 23422), (478, 18130), (490, 17686), (518, 16730), (740, 11711), (956, 9065), (980, 8843), (1036, 8365), (1195, 7252), (1295, 6692), (1673, 5180), (1813, 4780), (2390, 3626), (2590, 3346)]