18418820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 29481340

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 71, 85, 109, 119, 140, 142, 170, 218, 238, 284, 340, 355, 436, 476, 497, 545, 595, 710, 763, 994, 1090, 1190, 1207, 1420, 1526, 1853, 1988, 2180, 2380, 2414, 2485, 3052, 3706, 3815, 4828, 4970, 6035, 7412, 7630, 7739, 8449, 9265, 9940, 12070, 12971, 15260, 15478, 16898, 18530, 24140, 25942, 30956, 33796, 37060, 38695, 42245, 51884, 54173, 64855, 77390, 84490, 108346, 129710, 131563, 154780, 168980, 216692, 259420, 263126, 270865, 526252, 541730, 657815, 920941, 1083460, 1315630, 1841882, 2631260, 3683764, 4604705, 9209410, 18418820]

約数ペア:

[(1, 18418820), (2, 9209410), (4, 4604705), (5, 3683764), (7, 2631260), (10, 1841882), (14, 1315630), (17, 1083460), (20, 920941), (28, 657815), (34, 541730), (35, 526252), (68, 270865), (70, 263126), (71, 259420), (85, 216692), (109, 168980), (119, 154780), (140, 131563), (142, 129710), (170, 108346), (218, 84490), (238, 77390), (284, 64855), (340, 54173), (355, 51884), (436, 42245), (476, 38695), (497, 37060), (545, 33796), (595, 30956), (710, 25942), (763, 24140), (994, 18530), (1090, 16898), (1190, 15478), (1207, 15260), (1420, 12971), (1526, 12070), (1853, 9940), (1988, 9265), (2180, 8449), (2380, 7739), (2414, 7630), (2485, 7412), (3052, 6035), (3706, 4970), (3815, 4828)]