218520705

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{977}}^1$

素因数の和:1066

約数の個数: 64

約数和(自身を含む): 399587328

約数和(自身を除く): 181066623

約数列:

[1, 3, 5, 13, 15, 31, 37, 39, 65, 93, 111, 155, 185, 195, 403, 465, 481, 555, 977, 1147, 1209, 1443, 2015, 2405, 2931, 3441, 4885, 5735, 6045, 7215, 12701, 14655, 14911, 17205, 30287, 36149, 38103, 44733, 63505, 74555, 90861, 108447, 151435, 180745, 190515, 223665, 393731, 454305, 469937, 542235, 1120619, 1181193, 1409811, 1968655, 2349685, 3361857, 5603095, 5905965, 7049055, 14568047, 16809285, 43704141, 72840235, 218520705]

約数ペア:

[(1, 218520705), (3, 72840235), (5, 43704141), (13, 16809285), (15, 14568047), (31, 7049055), (37, 5905965), (39, 5603095), (65, 3361857), (93, 2349685), (111, 1968655), (155, 1409811), (185, 1181193), (195, 1120619), (403, 542235), (465, 469937), (481, 454305), (555, 393731), (977, 223665), (1147, 190515), (1209, 180745), (1443, 151435), (2015, 108447), (2405, 90861), (2931, 74555), (3441, 63505), (4885, 44733), (5735, 38103), (6045, 36149), (7215, 30287), (12701, 17205), (14655, 14911)]