81467440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53597}}^1$

素因数の和:53629

約数の個数: 40

約数和(自身を含む): 199384560

約数和(自身を除く): 117917120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 53597, 107194, 214388, 267985, 428776, 535970, 857552, 1018343, 1071940, 2036686, 2143880, 4073372, 4287760, 5091715, 8146744, 10183430, 16293488, 20366860, 40733720, 81467440]

約数ペア:

[(1, 81467440), (2, 40733720), (4, 20366860), (5, 16293488), (8, 10183430), (10, 8146744), (16, 5091715), (19, 4287760), (20, 4073372), (38, 2143880), (40, 2036686), (76, 1071940), (80, 1018343), (95, 857552), (152, 535970), (190, 428776), (304, 267985), (380, 214388), (760, 107194), (1520, 53597)]