645974895

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^2\times {\mathrm{199}}^1$

素因数の和:424

約数の個数: 48

約数和(自身を含む): 1095206400

約数和(自身を除く): 449231505

約数列:

[1, 3, 5, 15, 23, 69, 97, 115, 199, 291, 345, 485, 597, 995, 1455, 2231, 2985, 4577, 6693, 9409, 11155, 13731, 19303, 22885, 28227, 33465, 47045, 57909, 68655, 96515, 141135, 216407, 289545, 443969, 649221, 1082035, 1331907, 1872391, 2219845, 3246105, 5617173, 6659535, 9361955, 28085865, 43064993, 129194979, 215324965, 645974895]

約数ペア:

[(1, 645974895), (3, 215324965), (5, 129194979), (15, 43064993), (23, 28085865), (69, 9361955), (97, 6659535), (115, 5617173), (199, 3246105), (291, 2219845), (345, 1872391), (485, 1331907), (597, 1082035), (995, 649221), (1455, 443969), (2231, 289545), (2985, 216407), (4577, 141135), (6693, 96515), (9409, 68655), (11155, 57909), (13731, 47045), (19303, 33465), (22885, 28227)]