19966758

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:353

約数の個数: 64

約数和(自身を含む): 48660480

約数和(自身を除く): 28693722

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 131, 133, 191, 262, 266, 382, 393, 399, 573, 786, 798, 917, 1146, 1337, 1834, 2489, 2674, 2751, 3629, 4011, 4978, 5502, 7258, 7467, 8022, 10887, 14934, 17423, 21774, 25021, 25403, 34846, 50042, 50806, 52269, 75063, 76209, 104538, 150126, 152418, 175147, 350294, 475399, 525441, 950798, 1050882, 1426197, 2852394, 3327793, 6655586, 9983379, 19966758]

約数ペア:

[(1, 19966758), (2, 9983379), (3, 6655586), (6, 3327793), (7, 2852394), (14, 1426197), (19, 1050882), (21, 950798), (38, 525441), (42, 475399), (57, 350294), (114, 175147), (131, 152418), (133, 150126), (191, 104538), (262, 76209), (266, 75063), (382, 52269), (393, 50806), (399, 50042), (573, 34846), (786, 25403), (798, 25021), (917, 21774), (1146, 17423), (1337, 14934), (1834, 10887), (2489, 8022), (2674, 7467), (2751, 7258), (3629, 5502), (4011, 4978)]