215490645

素因数分解:

$3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{6211}}^1$

素因数の和:6482

約数の個数: 32

約数和(自身を含む): 384647040

約数和(自身を除く): 169156395

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 257, 771, 1285, 2313, 3855, 6211, 6939, 11565, 18633, 31055, 34695, 55899, 93165, 167697, 279495, 838485, 1596227, 4788681, 7981135, 14366043, 23943405, 43098129, 71830215, 215490645]

約数ペア:

[(1, 215490645), (3, 71830215), (5, 43098129), (9, 23943405), (15, 14366043), (27, 7981135), (45, 4788681), (135, 1596227), (257, 838485), (771, 279495), (1285, 167697), (2313, 93165), (3855, 55899), (6211, 34695), (6939, 31055), (11565, 18633)]