865998

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:126

約数の個数: 64

約数和(自身を含む): 2304000

約数和(自身を除く): 1438002

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 29, 42, 54, 58, 63, 79, 87, 126, 158, 174, 189, 203, 237, 261, 378, 406, 474, 522, 553, 609, 711, 783, 1106, 1218, 1422, 1566, 1659, 1827, 2133, 2291, 3318, 3654, 4266, 4582, 4977, 5481, 6873, 9954, 10962, 13746, 14931, 16037, 20619, 29862, 32074, 41238, 48111, 61857, 96222, 123714, 144333, 288666, 432999, 865998]

約数ペア:

[(1, 865998), (2, 432999), (3, 288666), (6, 144333), (7, 123714), (9, 96222), (14, 61857), (18, 48111), (21, 41238), (27, 32074), (29, 29862), (42, 20619), (54, 16037), (58, 14931), (63, 13746), (79, 10962), (87, 9954), (126, 6873), (158, 5481), (174, 4977), (189, 4582), (203, 4266), (237, 3654), (261, 3318), (378, 2291), (406, 2133), (474, 1827), (522, 1659), (553, 1566), (609, 1422), (711, 1218), (783, 1106)]