21117645

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8233}}^1$

素因数の和:8266

約数の個数: 32

約数和(自身を含む): 39523200

約数和(自身を除く): 18405555

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 8233, 24699, 41165, 74097, 123495, 156427, 222291, 370485, 469281, 782135, 1111455, 1407843, 2346405, 4223529, 7039215, 21117645]

約数ペア:

[(1, 21117645), (3, 7039215), (5, 4223529), (9, 2346405), (15, 1407843), (19, 1111455), (27, 782135), (45, 469281), (57, 370485), (95, 222291), (135, 156427), (171, 123495), (285, 74097), (513, 41165), (855, 24699), (2565, 8233)]