21407170

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 39657600

約数和(自身を除く): 18250430

約数列:

[1, 2, 5, 10, 67, 89, 134, 178, 335, 359, 445, 670, 718, 890, 1795, 3590, 5963, 11926, 24053, 29815, 31951, 48106, 59630, 63902, 120265, 159755, 240530, 319510, 2140717, 4281434, 10703585, 21407170]

約数ペア:

[(1, 21407170), (2, 10703585), (5, 4281434), (10, 2140717), (67, 319510), (89, 240530), (134, 159755), (178, 120265), (335, 63902), (359, 59630), (445, 48106), (670, 31951), (718, 29815), (890, 24053), (1795, 11926), (3590, 5963)]