28820817

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 46096128

約数和(自身を除く): 17275311

約数列:

[1, 3, 9, 23, 37, 53, 69, 71, 111, 159, 207, 213, 333, 477, 639, 851, 1219, 1633, 1961, 2553, 2627, 3657, 3763, 4899, 5883, 7659, 7881, 10971, 11289, 14697, 17649, 23643, 33867, 45103, 60421, 86549, 135309, 139231, 181263, 259647, 405927, 417693, 543789, 778941, 1253079, 3202313, 9606939, 28820817]

約数ペア:

[(1, 28820817), (3, 9606939), (9, 3202313), (23, 1253079), (37, 778941), (53, 543789), (69, 417693), (71, 405927), (111, 259647), (159, 181263), (207, 139231), (213, 135309), (333, 86549), (477, 60421), (639, 45103), (851, 33867), (1219, 23643), (1633, 17649), (1961, 14697), (2553, 11289), (2627, 10971), (3657, 7881), (3763, 7659), (4899, 5883)]