20121746480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{322051}}^1$

素因数の和:322146

約数の個数: 80

約数和(自身を含む): 51755044608

約数和(自身を除く): 31633298128

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1420, 1562, 2840, 3124, 3905, 5680, 6248, 7810, 12496, 15620, 31240, 62480, 322051, 644102, 1288204, 1610255, 2576408, 3220510, 3542561, 5152816, 6441020, 7085122, 12882040, 14170244, 17712805, 22865621, 25764080, 28340488, 35425610, 45731242, 56680976, 70851220, 91462484, 114328105, 141702440, 182924968, 228656210, 251521831, 283404880, 365849936, 457312420, 503043662, 914624840, 1006087324, 1257609155, 1829249680, 2012174648, 2515218310, 4024349296, 5030436620, 10060873240, 20121746480]

約数ペア:

[(1, 20121746480), (2, 10060873240), (4, 5030436620), (5, 4024349296), (8, 2515218310), (10, 2012174648), (11, 1829249680), (16, 1257609155), (20, 1006087324), (22, 914624840), (40, 503043662), (44, 457312420), (55, 365849936), (71, 283404880), (80, 251521831), (88, 228656210), (110, 182924968), (142, 141702440), (176, 114328105), (220, 91462484), (284, 70851220), (355, 56680976), (440, 45731242), (568, 35425610), (710, 28340488), (781, 25764080), (880, 22865621), (1136, 17712805), (1420, 14170244), (1562, 12882040), (2840, 7085122), (3124, 6441020), (3905, 5152816), (5680, 3542561), (6248, 3220510), (7810, 2576408), (12496, 1610255), (15620, 1288204), (31240, 644102), (62480, 322051)]