21779295

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{383}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 37158912

約数和(自身を除く): 15379617

約数列:

[1, 3, 5, 15, 17, 51, 85, 223, 255, 383, 669, 1115, 1149, 1915, 3345, 3791, 5745, 6511, 11373, 18955, 19533, 32555, 56865, 85409, 97665, 256227, 427045, 1281135, 1451953, 4355859, 7259765, 21779295]

約数ペア:

[(1, 21779295), (3, 7259765), (5, 4355859), (15, 1451953), (17, 1281135), (51, 427045), (85, 256227), (223, 97665), (255, 85409), (383, 56865), (669, 32555), (1115, 19533), (1149, 18955), (1915, 11373), (3345, 6511), (3791, 5745)]