28981990

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{367}}^1$

素因数の和:576

約数の個数: 32

約数和(自身を含む): 53654400

約数和(自身を除く): 24672410

約数列:

[1, 2, 5, 10, 53, 106, 149, 265, 298, 367, 530, 734, 745, 1490, 1835, 3670, 7897, 15794, 19451, 38902, 39485, 54683, 78970, 97255, 109366, 194510, 273415, 546830, 2898199, 5796398, 14490995, 28981990]

約数ペア:

[(1, 28981990), (2, 14490995), (5, 5796398), (10, 2898199), (53, 546830), (106, 273415), (149, 194510), (265, 109366), (298, 97255), (367, 78970), (530, 54683), (734, 39485), (745, 38902), (1490, 19451), (1835, 15794), (3670, 7897)]