20741784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{373}}^1$

素因数の和:720

約数の個数: 64

約数和(自身を含む): 59600640

約数和(自身を除く): 38858856

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 331, 373, 662, 746, 993, 1119, 1324, 1492, 1986, 2238, 2317, 2611, 2648, 2984, 3972, 4476, 4634, 5222, 6951, 7833, 7944, 8952, 9268, 10444, 13902, 15666, 18536, 20888, 27804, 31332, 55608, 62664, 123463, 246926, 370389, 493852, 740778, 864241, 987704, 1481556, 1728482, 2592723, 2963112, 3456964, 5185446, 6913928, 10370892, 20741784]

約数ペア:

[(1, 20741784), (2, 10370892), (3, 6913928), (4, 5185446), (6, 3456964), (7, 2963112), (8, 2592723), (12, 1728482), (14, 1481556), (21, 987704), (24, 864241), (28, 740778), (42, 493852), (56, 370389), (84, 246926), (168, 123463), (331, 62664), (373, 55608), (662, 31332), (746, 27804), (993, 20888), (1119, 18536), (1324, 15666), (1492, 13902), (1986, 10444), (2238, 9268), (2317, 8952), (2611, 7944), (2648, 7833), (2984, 6951), (3972, 5222), (4476, 4634)]