128240840

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{719}}^1$

素因数の和:764

約数の個数: 128

約数和(自身を含む): 362880000

約数和(自身を除く): 234639160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 91, 98, 104, 130, 140, 182, 196, 245, 260, 280, 343, 364, 392, 455, 490, 520, 637, 686, 719, 728, 910, 980, 1274, 1372, 1438, 1715, 1820, 1960, 2548, 2744, 2876, 3185, 3430, 3595, 3640, 4459, 5033, 5096, 5752, 6370, 6860, 7190, 8918, 9347, 10066, 12740, 13720, 14380, 17836, 18694, 20132, 22295, 25165, 25480, 28760, 35231, 35672, 37388, 40264, 44590, 46735, 50330, 65429, 70462, 74776, 89180, 93470, 100660, 130858, 140924, 176155, 178360, 186940, 201320, 246617, 261716, 281848, 327145, 352310, 373880, 458003, 493234, 523432, 654290, 704620, 916006, 986468, 1233085, 1308580, 1409240, 1832012, 1972936, 2290015, 2466170, 2617160, 3206021, 3664024, 4580030, 4932340, 6412042, 9160060, 9864680, 12824084, 16030105, 18320120, 25648168, 32060210, 64120420, 128240840]

約数ペア:

[(1, 128240840), (2, 64120420), (4, 32060210), (5, 25648168), (7, 18320120), (8, 16030105), (10, 12824084), (13, 9864680), (14, 9160060), (20, 6412042), (26, 4932340), (28, 4580030), (35, 3664024), (40, 3206021), (49, 2617160), (52, 2466170), (56, 2290015), (65, 1972936), (70, 1832012), (91, 1409240), (98, 1308580), (104, 1233085), (130, 986468), (140, 916006), (182, 704620), (196, 654290), (245, 523432), (260, 493234), (280, 458003), (343, 373880), (364, 352310), (392, 327145), (455, 281848), (490, 261716), (520, 246617), (637, 201320), (686, 186940), (719, 178360), (728, 176155), (910, 140924), (980, 130858), (1274, 100660), (1372, 93470), (1438, 89180), (1715, 74776), (1820, 70462), (1960, 65429), (2548, 50330), (2744, 46735), (2876, 44590), (3185, 40264), (3430, 37388), (3595, 35672), (3640, 35231), (4459, 28760), (5033, 25480), (5096, 25165), (5752, 22295), (6370, 20132), (6860, 18694), (7190, 17836), (8918, 14380), (9347, 13720), (10066, 12740)]