21978800

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2389}}^1$

素因数の和:2430

約数の個数: 60

約数和(自身を含む): 55122960

約数和(自身を除く): 33144160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 184, 200, 230, 368, 400, 460, 575, 920, 1150, 1840, 2300, 2389, 4600, 4778, 9200, 9556, 11945, 19112, 23890, 38224, 47780, 54947, 59725, 95560, 109894, 119450, 191120, 219788, 238900, 274735, 439576, 477800, 549470, 879152, 955600, 1098940, 1373675, 2197880, 2747350, 4395760, 5494700, 10989400, 21978800]

約数ペア:

[(1, 21978800), (2, 10989400), (4, 5494700), (5, 4395760), (8, 2747350), (10, 2197880), (16, 1373675), (20, 1098940), (23, 955600), (25, 879152), (40, 549470), (46, 477800), (50, 439576), (80, 274735), (92, 238900), (100, 219788), (115, 191120), (184, 119450), (200, 109894), (230, 95560), (368, 59725), (400, 54947), (460, 47780), (575, 38224), (920, 23890), (1150, 19112), (1840, 11945), (2300, 9556), (2389, 9200), (4600, 4778)]