281607664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71257}}^1$

素因数の和:71297

約数の個数: 40

約数和(自身を含む): 618519440

約数和(自身を除く): 336911776

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 71257, 142514, 285028, 570056, 926341, 1140112, 1353883, 1852682, 2707766, 3705364, 5415532, 7410728, 10831064, 14821456, 17600479, 21662128, 35200958, 70401916, 140803832, 281607664]

約数ペア:

[(1, 281607664), (2, 140803832), (4, 70401916), (8, 35200958), (13, 21662128), (16, 17600479), (19, 14821456), (26, 10831064), (38, 7410728), (52, 5415532), (76, 3705364), (104, 2707766), (152, 1852682), (208, 1353883), (247, 1140112), (304, 926341), (494, 570056), (988, 285028), (1976, 142514), (3952, 71257)]