1813900

素因数分解:

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

素因数の和:139

約数の個数: 72

約数和(自身を含む): 4593456

約数和(自身を除く): 2779556

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 97, 100, 110, 170, 187, 194, 220, 275, 340, 374, 388, 425, 485, 550, 748, 850, 935, 970, 1067, 1100, 1649, 1700, 1870, 1940, 2134, 2425, 3298, 3740, 4268, 4675, 4850, 5335, 6596, 8245, 9350, 9700, 10670, 16490, 18139, 18700, 21340, 26675, 32980, 36278, 41225, 53350, 72556, 82450, 90695, 106700, 164900, 181390, 362780, 453475, 906950, 1813900]

約数ペア:

[(1, 1813900), (2, 906950), (4, 453475), (5, 362780), (10, 181390), (11, 164900), (17, 106700), (20, 90695), (22, 82450), (25, 72556), (34, 53350), (44, 41225), (50, 36278), (55, 32980), (68, 26675), (85, 21340), (97, 18700), (100, 18139), (110, 16490), (170, 10670), (187, 9700), (194, 9350), (220, 8245), (275, 6596), (340, 5335), (374, 4850), (388, 4675), (425, 4268), (485, 3740), (550, 3298), (748, 2425), (850, 2134), (935, 1940), (970, 1870), (1067, 1700), (1100, 1649)]