18678275

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 29902848

約数和(自身を除く): 11224573

約数列:

[1, 5, 7, 11, 25, 31, 35, 55, 77, 155, 175, 217, 275, 313, 341, 385, 775, 1085, 1565, 1705, 1925, 2191, 2387, 3443, 5425, 7825, 8525, 9703, 10955, 11935, 17215, 24101, 48515, 54775, 59675, 67921, 86075, 106733, 120505, 242575, 339605, 533665, 602525, 747131, 1698025, 2668325, 3735655, 18678275]

約数ペア:

[(1, 18678275), (5, 3735655), (7, 2668325), (11, 1698025), (25, 747131), (31, 602525), (35, 533665), (55, 339605), (77, 242575), (155, 120505), (175, 106733), (217, 86075), (275, 67921), (313, 59675), (341, 54775), (385, 48515), (775, 24101), (1085, 17215), (1565, 11935), (1705, 10955), (1925, 9703), (2191, 8525), (2387, 7825), (3443, 5425)]