216390520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{102071}}^1$

素因数の和:102135

約数の個数: 32

約数和(自身を含む): 496069920

約数和(自身を除く): 279679400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 102071, 204142, 408284, 510355, 816568, 1020710, 2041420, 4082840, 5409763, 10819526, 21639052, 27048815, 43278104, 54097630, 108195260, 216390520]

約数ペア:

[(1, 216390520), (2, 108195260), (4, 54097630), (5, 43278104), (8, 27048815), (10, 21639052), (20, 10819526), (40, 5409763), (53, 4082840), (106, 2041420), (212, 1020710), (265, 816568), (424, 510355), (530, 408284), (1060, 204142), (2120, 102071)]