28681840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2963}}^1$

素因数の和:2998

約数の個数: 60

約数和(自身を含む): 73323432

約数和(自身を除く): 44641592

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2420, 2963, 4840, 5926, 9680, 11852, 14815, 23704, 29630, 32593, 47408, 59260, 65186, 118520, 130372, 162965, 237040, 260744, 325930, 358523, 521488, 651860, 717046, 1303720, 1434092, 1792615, 2607440, 2868184, 3585230, 5736368, 7170460, 14340920, 28681840]

約数ペア:

[(1, 28681840), (2, 14340920), (4, 7170460), (5, 5736368), (8, 3585230), (10, 2868184), (11, 2607440), (16, 1792615), (20, 1434092), (22, 1303720), (40, 717046), (44, 651860), (55, 521488), (80, 358523), (88, 325930), (110, 260744), (121, 237040), (176, 162965), (220, 130372), (242, 118520), (440, 65186), (484, 59260), (605, 47408), (880, 32593), (968, 29630), (1210, 23704), (1936, 14815), (2420, 11852), (2963, 9680), (4840, 5926)]