1388996840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7393}}^1$

素因数の和:7483

約数の個数: 128

約数和(自身を含む): 3960817920

約数和(自身を除く): 2571821080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 61, 70, 77, 88, 110, 122, 140, 154, 220, 244, 280, 305, 308, 385, 427, 440, 488, 610, 616, 671, 770, 854, 1220, 1342, 1540, 1708, 2135, 2440, 2684, 3080, 3355, 3416, 4270, 4697, 5368, 6710, 7393, 8540, 9394, 13420, 14786, 17080, 18788, 23485, 26840, 29572, 36965, 37576, 46970, 51751, 59144, 73930, 81323, 93940, 103502, 147860, 162646, 187880, 207004, 258755, 295720, 325292, 406615, 414008, 450973, 517510, 569261, 650584, 813230, 901946, 1035020, 1138522, 1626460, 1803892, 2070040, 2254865, 2277044, 2846305, 3156811, 3252920, 3607784, 4509730, 4554088, 4960703, 5692610, 6313622, 9019460, 9921406, 11385220, 12627244, 15784055, 18038920, 19842812, 22770440, 24803515, 25254488, 31568110, 34724921, 39685624, 49607030, 63136220, 69449842, 99214060, 126272440, 138899684, 173624605, 198428120, 277799368, 347249210, 694498420, 1388996840]

約数ペア:

[(1, 1388996840), (2, 694498420), (4, 347249210), (5, 277799368), (7, 198428120), (8, 173624605), (10, 138899684), (11, 126272440), (14, 99214060), (20, 69449842), (22, 63136220), (28, 49607030), (35, 39685624), (40, 34724921), (44, 31568110), (55, 25254488), (56, 24803515), (61, 22770440), (70, 19842812), (77, 18038920), (88, 15784055), (110, 12627244), (122, 11385220), (140, 9921406), (154, 9019460), (220, 6313622), (244, 5692610), (280, 4960703), (305, 4554088), (308, 4509730), (385, 3607784), (427, 3252920), (440, 3156811), (488, 2846305), (610, 2277044), (616, 2254865), (671, 2070040), (770, 1803892), (854, 1626460), (1220, 1138522), (1342, 1035020), (1540, 901946), (1708, 813230), (2135, 650584), (2440, 569261), (2684, 517510), (3080, 450973), (3355, 414008), (3416, 406615), (4270, 325292), (4697, 295720), (5368, 258755), (6710, 207004), (7393, 187880), (8540, 162646), (9394, 147860), (13420, 103502), (14786, 93940), (17080, 81323), (18788, 73930), (23485, 59144), (26840, 51751), (29572, 46970), (36965, 37576)]