128931740

素因数分解:

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

素因数の和:220

約数の個数: 144

約数和(自身を含む): 341288640

約数和(自身を除く): 212356900

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 71, 85, 98, 109, 119, 140, 142, 170, 196, 218, 238, 245, 284, 340, 355, 436, 476, 490, 497, 545, 595, 710, 763, 833, 980, 994, 1090, 1190, 1207, 1420, 1526, 1666, 1853, 1988, 2180, 2380, 2414, 2485, 3052, 3332, 3479, 3706, 3815, 4165, 4828, 4970, 5341, 6035, 6958, 7412, 7630, 7739, 8330, 8449, 9265, 9940, 10682, 12070, 12971, 13916, 15260, 15478, 16660, 16898, 17395, 18530, 21364, 24140, 25942, 26705, 30956, 33796, 34790, 37060, 38695, 42245, 51884, 53410, 54173, 59143, 64855, 69580, 77390, 84490, 90797, 106820, 108346, 118286, 129710, 131563, 154780, 168980, 181594, 216692, 236572, 259420, 263126, 270865, 295715, 363188, 379211, 453985, 526252, 541730, 591430, 657815, 758422, 907970, 920941, 1083460, 1182860, 1315630, 1516844, 1815940, 1841882, 1896055, 2631260, 3683764, 3792110, 4604705, 6446587, 7584220, 9209410, 12893174, 18418820, 25786348, 32232935, 64465870, 128931740]

約数ペア:

[(1, 128931740), (2, 64465870), (4, 32232935), (5, 25786348), (7, 18418820), (10, 12893174), (14, 9209410), (17, 7584220), (20, 6446587), (28, 4604705), (34, 3792110), (35, 3683764), (49, 2631260), (68, 1896055), (70, 1841882), (71, 1815940), (85, 1516844), (98, 1315630), (109, 1182860), (119, 1083460), (140, 920941), (142, 907970), (170, 758422), (196, 657815), (218, 591430), (238, 541730), (245, 526252), (284, 453985), (340, 379211), (355, 363188), (436, 295715), (476, 270865), (490, 263126), (497, 259420), (545, 236572), (595, 216692), (710, 181594), (763, 168980), (833, 154780), (980, 131563), (994, 129710), (1090, 118286), (1190, 108346), (1207, 106820), (1420, 90797), (1526, 84490), (1666, 77390), (1853, 69580), (1988, 64855), (2180, 59143), (2380, 54173), (2414, 53410), (2485, 51884), (3052, 42245), (3332, 38695), (3479, 37060), (3706, 34790), (3815, 33796), (4165, 30956), (4828, 26705), (4970, 25942), (5341, 24140), (6035, 21364), (6958, 18530), (7412, 17395), (7630, 16898), (7739, 16660), (8330, 15478), (8449, 15260), (9265, 13916), (9940, 12971), (10682, 12070)]