66844340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^2\times {\mathrm{89}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 153566280

約数和(自身を除く): 86721940

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 89, 94, 170, 178, 188, 235, 340, 356, 445, 470, 799, 890, 940, 1513, 1598, 1780, 2209, 3026, 3196, 3995, 4183, 4418, 6052, 7565, 7990, 8366, 8836, 11045, 15130, 15980, 16732, 20915, 22090, 30260, 37553, 41830, 44180, 71111, 75106, 83660, 142222, 150212, 187765, 196601, 284444, 355555, 375530, 393202, 711110, 751060, 786404, 983005, 1422220, 1966010, 3342217, 3932020, 6684434, 13368868, 16711085, 33422170, 66844340]

約数ペア:

[(1, 66844340), (2, 33422170), (4, 16711085), (5, 13368868), (10, 6684434), (17, 3932020), (20, 3342217), (34, 1966010), (47, 1422220), (68, 983005), (85, 786404), (89, 751060), (94, 711110), (170, 393202), (178, 375530), (188, 355555), (235, 284444), (340, 196601), (356, 187765), (445, 150212), (470, 142222), (799, 83660), (890, 75106), (940, 71111), (1513, 44180), (1598, 41830), (1780, 37553), (2209, 30260), (3026, 22090), (3196, 20915), (3995, 16732), (4183, 15980), (4418, 15130), (6052, 11045), (7565, 8836), (7990, 8366)]