20699680

素因数分解:

$2^5\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2441}}^1$

素因数の和:2509

約数の個数: 48

約数和(自身を含む): 49846104

約数和(自身を除く): 29146424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 80, 106, 160, 212, 265, 424, 530, 848, 1060, 1696, 2120, 2441, 4240, 4882, 8480, 9764, 12205, 19528, 24410, 39056, 48820, 78112, 97640, 129373, 195280, 258746, 390560, 517492, 646865, 1034984, 1293730, 2069968, 2587460, 4139936, 5174920, 10349840, 20699680]

約数ペア:

[(1, 20699680), (2, 10349840), (4, 5174920), (5, 4139936), (8, 2587460), (10, 2069968), (16, 1293730), (20, 1034984), (32, 646865), (40, 517492), (53, 390560), (80, 258746), (106, 195280), (160, 129373), (212, 97640), (265, 78112), (424, 48820), (530, 39056), (848, 24410), (1060, 19528), (1696, 12205), (2120, 9764), (2441, 8480), (4240, 4882)]