215543240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{489871}}^1$

素因数の和:489893

約数の個数: 32

約数和(自身を含む): 529061760

約数和(自身を除く): 313518520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 489871, 979742, 1959484, 2449355, 3918968, 4898710, 5388581, 9797420, 10777162, 19594840, 21554324, 26942905, 43108648, 53885810, 107771620, 215543240]

約数ペア:

[(1, 215543240), (2, 107771620), (4, 53885810), (5, 43108648), (8, 26942905), (10, 21554324), (11, 19594840), (20, 10777162), (22, 9797420), (40, 5388581), (44, 4898710), (55, 3918968), (88, 2449355), (110, 1959484), (220, 979742), (440, 489871)]