21090597980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{907}}^1\times {\mathrm{10289}}^1$

素因数の和:11318

約数の個数: 48

約数和(自身を含む): 44735816160

約数和(自身を除く): 23645218180

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 907, 1130, 1814, 2260, 3628, 4535, 9070, 10289, 18140, 20578, 41156, 51445, 102491, 102890, 204982, 205780, 409964, 512455, 1024910, 1162657, 2049820, 2325314, 4650628, 5813285, 9332123, 11626570, 18664246, 23253140, 37328492, 46660615, 93321230, 186642460, 1054529899, 2109059798, 4218119596, 5272649495, 10545298990, 21090597980]

約数ペア:

[(1, 21090597980), (2, 10545298990), (4, 5272649495), (5, 4218119596), (10, 2109059798), (20, 1054529899), (113, 186642460), (226, 93321230), (452, 46660615), (565, 37328492), (907, 23253140), (1130, 18664246), (1814, 11626570), (2260, 9332123), (3628, 5813285), (4535, 4650628), (9070, 2325314), (10289, 2049820), (18140, 1162657), (20578, 1024910), (41156, 512455), (51445, 409964), (102491, 205780), (102890, 204982)]