655860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:672

約数の個数: 48

約数和(自身を含む): 1947456

約数和(自身を除く): 1291596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 643, 1020, 1286, 1929, 2572, 3215, 3858, 6430, 7716, 9645, 10931, 12860, 19290, 21862, 32793, 38580, 43724, 54655, 65586, 109310, 131172, 163965, 218620, 327930, 655860]

約数ペア:

[(1, 655860), (2, 327930), (3, 218620), (4, 163965), (5, 131172), (6, 109310), (10, 65586), (12, 54655), (15, 43724), (17, 38580), (20, 32793), (30, 21862), (34, 19290), (51, 12860), (60, 10931), (68, 9645), (85, 7716), (102, 6430), (170, 3858), (204, 3215), (255, 2572), (340, 1929), (510, 1286), (643, 1020)]