21696955

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 32832000

約数和(自身を除く): 11135045

約数列:

[1, 5, 7, 19, 35, 49, 59, 79, 95, 133, 245, 295, 395, 413, 553, 665, 931, 1121, 1501, 2065, 2765, 2891, 3871, 4655, 4661, 5605, 7505, 7847, 10507, 14455, 19355, 23305, 32627, 39235, 52535, 54929, 73549, 88559, 163135, 228389, 274645, 367745, 442795, 619913, 1141945, 3099565, 4339391, 21696955]

約数ペア:

[(1, 21696955), (5, 4339391), (7, 3099565), (19, 1141945), (35, 619913), (49, 442795), (59, 367745), (79, 274645), (95, 228389), (133, 163135), (245, 88559), (295, 73549), (395, 54929), (413, 52535), (553, 39235), (665, 32627), (931, 23305), (1121, 19355), (1501, 14455), (2065, 10507), (2765, 7847), (2891, 7505), (3871, 5605), (4655, 4661)]