78456040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{157}}^1$

素因数の和:243

約数の個数: 96

約数和(自身を含む): 197686440

約数和(自身を除く): 119230400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 157, 248, 260, 310, 314, 403, 520, 620, 628, 785, 806, 961, 1240, 1256, 1570, 1612, 1922, 2015, 2041, 3140, 3224, 3844, 4030, 4082, 4805, 4867, 6280, 7688, 8060, 8164, 9610, 9734, 10205, 12493, 16120, 16328, 19220, 19468, 20410, 24335, 24986, 38440, 38936, 40820, 48670, 49972, 62465, 63271, 81640, 97340, 99944, 124930, 126542, 150877, 194680, 249860, 253084, 301754, 316355, 499720, 506168, 603508, 632710, 754385, 1207016, 1265420, 1508770, 1961401, 2530840, 3017540, 3922802, 6035080, 7845604, 9807005, 15691208, 19614010, 39228020, 78456040]

約数ペア:

[(1, 78456040), (2, 39228020), (4, 19614010), (5, 15691208), (8, 9807005), (10, 7845604), (13, 6035080), (20, 3922802), (26, 3017540), (31, 2530840), (40, 1961401), (52, 1508770), (62, 1265420), (65, 1207016), (104, 754385), (124, 632710), (130, 603508), (155, 506168), (157, 499720), (248, 316355), (260, 301754), (310, 253084), (314, 249860), (403, 194680), (520, 150877), (620, 126542), (628, 124930), (785, 99944), (806, 97340), (961, 81640), (1240, 63271), (1256, 62465), (1570, 49972), (1612, 48670), (1922, 40820), (2015, 38936), (2041, 38440), (3140, 24986), (3224, 24335), (3844, 20410), (4030, 19468), (4082, 19220), (4805, 16328), (4867, 16120), (6280, 12493), (7688, 10205), (8060, 9734), (8164, 9610)]