18001018

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 35020800

約数和(自身を除く): 17019782

約数列:

[1, 2, 7, 14, 19, 31, 37, 38, 59, 62, 74, 118, 133, 217, 259, 266, 413, 434, 518, 589, 703, 826, 1121, 1147, 1178, 1406, 1829, 2183, 2242, 2294, 3658, 4123, 4366, 4921, 7847, 8029, 8246, 9842, 12803, 15281, 15694, 16058, 21793, 25606, 30562, 34751, 41477, 43586, 67673, 69502, 82954, 135346, 152551, 243257, 290339, 305102, 473711, 486514, 580678, 947422, 1285787, 2571574, 9000509, 18001018]

約数ペア:

[(1, 18001018), (2, 9000509), (7, 2571574), (14, 1285787), (19, 947422), (31, 580678), (37, 486514), (38, 473711), (59, 305102), (62, 290339), (74, 243257), (118, 152551), (133, 135346), (217, 82954), (259, 69502), (266, 67673), (413, 43586), (434, 41477), (518, 34751), (589, 30562), (703, 25606), (826, 21793), (1121, 16058), (1147, 15694), (1178, 15281), (1406, 12803), (1829, 9842), (2183, 8246), (2242, 8029), (2294, 7847), (3658, 4921), (4123, 4366)]