20782900

素因数分解:

$2^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 47793816

約数和(自身を除く): 27010916

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 41, 50, 74, 82, 100, 137, 148, 164, 185, 205, 274, 370, 410, 548, 685, 740, 820, 925, 1025, 1370, 1517, 1850, 2050, 2740, 3034, 3425, 3700, 4100, 5069, 5617, 6068, 6850, 7585, 10138, 11234, 13700, 15170, 20276, 22468, 25345, 28085, 30340, 37925, 50690, 56170, 75850, 101380, 112340, 126725, 140425, 151700, 207829, 253450, 280850, 415658, 506900, 561700, 831316, 1039145, 2078290, 4156580, 5195725, 10391450, 20782900]

約数ペア:

[(1, 20782900), (2, 10391450), (4, 5195725), (5, 4156580), (10, 2078290), (20, 1039145), (25, 831316), (37, 561700), (41, 506900), (50, 415658), (74, 280850), (82, 253450), (100, 207829), (137, 151700), (148, 140425), (164, 126725), (185, 112340), (205, 101380), (274, 75850), (370, 56170), (410, 50690), (548, 37925), (685, 30340), (740, 28085), (820, 25345), (925, 22468), (1025, 20276), (1370, 15170), (1517, 13700), (1850, 11234), (2050, 10138), (2740, 7585), (3034, 6850), (3425, 6068), (3700, 5617), (4100, 5069)]