215550920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{414521}}^1$

素因数の和:414545

約数の個数: 32

約数和(自身を含む): 522297720

約数和(自身を除く): 306746800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 414521, 829042, 1658084, 2072605, 3316168, 4145210, 5388773, 8290420, 10777546, 16580840, 21555092, 26943865, 43110184, 53887730, 107775460, 215550920]

約数ペア:

[(1, 215550920), (2, 107775460), (4, 53887730), (5, 43110184), (8, 26943865), (10, 21555092), (13, 16580840), (20, 10777546), (26, 8290420), (40, 5388773), (52, 4145210), (65, 3316168), (104, 2072605), (130, 1658084), (260, 829042), (520, 414521)]