20947785

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2371}}^1$

素因数の和:2429

約数の個数: 32

約数和(自身を含む): 36433920

約数和(自身を除く): 15486135

約数列:

[1, 3, 5, 15, 19, 31, 57, 93, 95, 155, 285, 465, 589, 1767, 2371, 2945, 7113, 8835, 11855, 35565, 45049, 73501, 135147, 220503, 225245, 367505, 675735, 1102515, 1396519, 4189557, 6982595, 20947785]

約数ペア:

[(1, 20947785), (3, 6982595), (5, 4189557), (15, 1396519), (19, 1102515), (31, 675735), (57, 367505), (93, 225245), (95, 220503), (155, 135147), (285, 73501), (465, 45049), (589, 35565), (1767, 11855), (2371, 8835), (2945, 7113)]