13240720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:344

約数の個数: 80

約数和(自身を含む): 33569280

約数和(自身を除く): 20328560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 95, 124, 152, 155, 190, 248, 281, 304, 310, 380, 496, 562, 589, 620, 760, 1124, 1178, 1240, 1405, 1520, 2248, 2356, 2480, 2810, 2945, 4496, 4712, 5339, 5620, 5890, 8711, 9424, 10678, 11240, 11780, 17422, 21356, 22480, 23560, 26695, 34844, 42712, 43555, 47120, 53390, 69688, 85424, 87110, 106780, 139376, 165509, 174220, 213560, 331018, 348440, 427120, 662036, 696880, 827545, 1324072, 1655090, 2648144, 3310180, 6620360, 13240720]

約数ペア:

[(1, 13240720), (2, 6620360), (4, 3310180), (5, 2648144), (8, 1655090), (10, 1324072), (16, 827545), (19, 696880), (20, 662036), (31, 427120), (38, 348440), (40, 331018), (62, 213560), (76, 174220), (80, 165509), (95, 139376), (124, 106780), (152, 87110), (155, 85424), (190, 69688), (248, 53390), (281, 47120), (304, 43555), (310, 42712), (380, 34844), (496, 26695), (562, 23560), (589, 22480), (620, 21356), (760, 17422), (1124, 11780), (1178, 11240), (1240, 10678), (1405, 9424), (1520, 8711), (2248, 5890), (2356, 5620), (2480, 5339), (2810, 4712), (2945, 4496)]