289555760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{643}}^1$

素因数の和:1102

約数の個数: 80

約数和(自身を含む): 727807584

約数和(自身を除く): 438251824

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 433, 520, 643, 866, 1040, 1286, 1732, 2165, 2572, 3215, 3464, 4330, 5144, 5629, 6430, 6928, 8359, 8660, 10288, 11258, 12860, 16718, 17320, 22516, 25720, 28145, 33436, 34640, 41795, 45032, 51440, 56290, 66872, 83590, 90064, 112580, 133744, 167180, 225160, 278419, 334360, 450320, 556838, 668720, 1113676, 1392095, 2227352, 2784190, 3619447, 4454704, 5568380, 7238894, 11136760, 14477788, 18097235, 22273520, 28955576, 36194470, 57911152, 72388940, 144777880, 289555760]

約数ペア:

[(1, 289555760), (2, 144777880), (4, 72388940), (5, 57911152), (8, 36194470), (10, 28955576), (13, 22273520), (16, 18097235), (20, 14477788), (26, 11136760), (40, 7238894), (52, 5568380), (65, 4454704), (80, 3619447), (104, 2784190), (130, 2227352), (208, 1392095), (260, 1113676), (433, 668720), (520, 556838), (643, 450320), (866, 334360), (1040, 278419), (1286, 225160), (1732, 167180), (2165, 133744), (2572, 112580), (3215, 90064), (3464, 83590), (4330, 66872), (5144, 56290), (5629, 51440), (6430, 45032), (6928, 41795), (8359, 34640), (8660, 33436), (10288, 28145), (11258, 25720), (12860, 22516), (16718, 17320)]