215516455

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{379}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 330618240

約数和(自身を除く): 115101785

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 211, 245, 379, 385, 539, 1055, 1477, 1895, 2321, 2653, 2695, 4169, 7385, 10339, 11605, 13265, 16247, 18571, 20845, 29183, 51695, 79969, 81235, 92855, 113729, 145915, 204281, 399845, 559783, 568645, 879659, 1021405, 2798915, 3918481, 4398295, 6157613, 19592405, 30788065, 43103291, 215516455]

約数ペア:

[(1, 215516455), (5, 43103291), (7, 30788065), (11, 19592405), (35, 6157613), (49, 4398295), (55, 3918481), (77, 2798915), (211, 1021405), (245, 879659), (379, 568645), (385, 559783), (539, 399845), (1055, 204281), (1477, 145915), (1895, 113729), (2321, 92855), (2653, 81235), (2695, 79969), (4169, 51695), (7385, 29183), (10339, 20845), (11605, 18571), (13265, 16247)]