8981720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 22356000

約数和(自身を除く): 13374280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 137, 149, 220, 274, 298, 440, 548, 596, 685, 745, 1096, 1192, 1370, 1490, 1507, 1639, 2740, 2980, 3014, 3278, 5480, 5960, 6028, 6556, 7535, 8195, 12056, 13112, 15070, 16390, 20413, 30140, 32780, 40826, 60280, 65560, 81652, 102065, 163304, 204130, 224543, 408260, 449086, 816520, 898172, 1122715, 1796344, 2245430, 4490860, 8981720]

約数ペア:

[(1, 8981720), (2, 4490860), (4, 2245430), (5, 1796344), (8, 1122715), (10, 898172), (11, 816520), (20, 449086), (22, 408260), (40, 224543), (44, 204130), (55, 163304), (88, 102065), (110, 81652), (137, 65560), (149, 60280), (220, 40826), (274, 32780), (298, 30140), (440, 20413), (548, 16390), (596, 15070), (685, 13112), (745, 12056), (1096, 8195), (1192, 7535), (1370, 6556), (1490, 6028), (1507, 5960), (1639, 5480), (2740, 3278), (2980, 3014)]