199788440

素因数分解:

$2^3\times 5^1\times {\mathrm{619}}^1\times {\mathrm{8069}}^1$

素因数の和:8699

約数の個数: 32

約数和(自身を含む): 450306000

約数和(自身を除く): 250517560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 619, 1238, 2476, 3095, 4952, 6190, 8069, 12380, 16138, 24760, 32276, 40345, 64552, 80690, 161380, 322760, 4994711, 9989422, 19978844, 24973555, 39957688, 49947110, 99894220, 199788440]

約数ペア:

[(1, 199788440), (2, 99894220), (4, 49947110), (5, 39957688), (8, 24973555), (10, 19978844), (20, 9989422), (40, 4994711), (619, 322760), (1238, 161380), (2476, 80690), (3095, 64552), (4952, 40345), (6190, 32276), (8069, 24760), (12380, 16138)]