128786900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:210

約数の個数: 144

約数和(自身を含む): 330728832

約数和(自身を除く): 201941932

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 71, 85, 97, 100, 110, 142, 170, 187, 194, 220, 275, 284, 340, 355, 374, 388, 425, 485, 550, 710, 748, 781, 850, 935, 970, 1067, 1100, 1207, 1420, 1562, 1649, 1700, 1775, 1870, 1940, 2134, 2414, 2425, 3124, 3298, 3550, 3740, 3905, 4268, 4675, 4828, 4850, 5335, 6035, 6596, 6887, 7100, 7810, 8245, 9350, 9700, 10670, 12070, 13277, 13774, 15620, 16490, 18139, 18700, 19525, 21340, 24140, 26554, 26675, 27548, 30175, 32980, 34435, 36278, 39050, 41225, 53108, 53350, 60350, 66385, 68870, 72556, 75757, 78100, 82450, 90695, 106700, 117079, 120700, 132770, 137740, 151514, 164900, 172175, 181390, 234158, 265540, 303028, 331925, 344350, 362780, 378785, 453475, 468316, 585395, 663850, 688700, 757570, 906950, 1170790, 1287869, 1327700, 1515140, 1813900, 1893925, 2341580, 2575738, 2926975, 3787850, 5151476, 5853950, 6439345, 7575700, 11707900, 12878690, 25757380, 32196725, 64393450, 128786900]

約数ペア:

[(1, 128786900), (2, 64393450), (4, 32196725), (5, 25757380), (10, 12878690), (11, 11707900), (17, 7575700), (20, 6439345), (22, 5853950), (25, 5151476), (34, 3787850), (44, 2926975), (50, 2575738), (55, 2341580), (68, 1893925), (71, 1813900), (85, 1515140), (97, 1327700), (100, 1287869), (110, 1170790), (142, 906950), (170, 757570), (187, 688700), (194, 663850), (220, 585395), (275, 468316), (284, 453475), (340, 378785), (355, 362780), (374, 344350), (388, 331925), (425, 303028), (485, 265540), (550, 234158), (710, 181390), (748, 172175), (781, 164900), (850, 151514), (935, 137740), (970, 132770), (1067, 120700), (1100, 117079), (1207, 106700), (1420, 90695), (1562, 82450), (1649, 78100), (1700, 75757), (1775, 72556), (1870, 68870), (1940, 66385), (2134, 60350), (2414, 53350), (2425, 53108), (3124, 41225), (3298, 39050), (3550, 36278), (3740, 34435), (3905, 32980), (4268, 30175), (4675, 27548), (4828, 26675), (4850, 26554), (5335, 24140), (6035, 21340), (6596, 19525), (6887, 18700), (7100, 18139), (7810, 16490), (8245, 15620), (9350, 13774), (9700, 13277), (10670, 12070)]