15001990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{179}}^1$

素因数の和:249

約数の個数: 48

約数和(自身を含む): 29840400

約数和(自身を除く): 14838410

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 170, 179, 289, 290, 358, 493, 578, 895, 986, 1445, 1790, 2465, 2890, 3043, 4930, 5191, 6086, 8381, 10382, 15215, 16762, 25955, 30430, 41905, 51731, 51910, 83810, 88247, 103462, 176494, 258655, 441235, 517310, 882470, 1500199, 3000398, 7500995, 15001990]

約数ペア:

[(1, 15001990), (2, 7500995), (5, 3000398), (10, 1500199), (17, 882470), (29, 517310), (34, 441235), (58, 258655), (85, 176494), (145, 103462), (170, 88247), (179, 83810), (289, 51910), (290, 51731), (358, 41905), (493, 30430), (578, 25955), (895, 16762), (986, 15215), (1445, 10382), (1790, 8381), (2465, 6086), (2890, 5191), (3043, 4930)]