21481816

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{373}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 42276960

約数和(自身を除く): 20795144

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 313, 373, 626, 746, 1252, 1492, 2504, 2984, 7199, 8579, 14398, 17158, 28796, 34316, 57592, 68632, 116749, 233498, 466996, 933992, 2685227, 5370454, 10740908, 21481816]

約数ペア:

[(1, 21481816), (2, 10740908), (4, 5370454), (8, 2685227), (23, 933992), (46, 466996), (92, 233498), (184, 116749), (313, 68632), (373, 57592), (626, 34316), (746, 28796), (1252, 17158), (1492, 14398), (2504, 8579), (2984, 7199)]