18867110

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 38491200

約数和(自身を除く): 19624090

約数列:

[1, 2, 5, 10, 17, 29, 34, 43, 58, 85, 86, 89, 145, 170, 178, 215, 290, 430, 445, 493, 731, 890, 986, 1247, 1462, 1513, 2465, 2494, 2581, 3026, 3655, 3827, 4930, 5162, 6235, 7310, 7565, 7654, 12470, 12905, 15130, 19135, 21199, 25810, 38270, 42398, 43877, 65059, 87754, 105995, 110983, 130118, 211990, 219385, 221966, 325295, 438770, 554915, 650590, 1109830, 1886711, 3773422, 9433555, 18867110]

約数ペア:

[(1, 18867110), (2, 9433555), (5, 3773422), (10, 1886711), (17, 1109830), (29, 650590), (34, 554915), (43, 438770), (58, 325295), (85, 221966), (86, 219385), (89, 211990), (145, 130118), (170, 110983), (178, 105995), (215, 87754), (290, 65059), (430, 43877), (445, 42398), (493, 38270), (731, 25810), (890, 21199), (986, 19135), (1247, 15130), (1462, 12905), (1513, 12470), (2465, 7654), (2494, 7565), (2581, 7310), (3026, 6235), (3655, 5162), (3827, 4930)]