19701328

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{283}}^1$

素因数の和:539

約数の個数: 40

約数和(自身を含む): 40498400

約数和(自身を除く): 20797072

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 229, 283, 304, 458, 566, 916, 1132, 1832, 2264, 3664, 4351, 4528, 5377, 8702, 10754, 17404, 21508, 34808, 43016, 64807, 69616, 86032, 129614, 259228, 518456, 1036912, 1231333, 2462666, 4925332, 9850664, 19701328]

約数ペア:

[(1, 19701328), (2, 9850664), (4, 4925332), (8, 2462666), (16, 1231333), (19, 1036912), (38, 518456), (76, 259228), (152, 129614), (229, 86032), (283, 69616), (304, 64807), (458, 43016), (566, 34808), (916, 21508), (1132, 17404), (1832, 10754), (2264, 8702), (3664, 5377), (4351, 4528)]