21187545

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{919}}^1$

素因数の和:1009

約数の個数: 32

約数和(自身を含む): 35769600

約数和(自身を除く): 14582055

約数列:

[1, 3, 5, 15, 29, 53, 87, 145, 159, 265, 435, 795, 919, 1537, 2757, 4595, 4611, 7685, 13785, 23055, 26651, 48707, 79953, 133255, 146121, 243535, 399765, 730605, 1412503, 4237509, 7062515, 21187545]

約数ペア:

[(1, 21187545), (3, 7062515), (5, 4237509), (15, 1412503), (29, 730605), (53, 399765), (87, 243535), (145, 146121), (159, 133255), (265, 79953), (435, 48707), (795, 26651), (919, 23055), (1537, 13785), (2757, 7685), (4595, 4611)]