28091120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18481}}^1$

素因数の和:18513

約数の個数: 40

約数和(自身を含む): 68753040

約数和(自身を除く): 40661920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18481, 36962, 73924, 92405, 147848, 184810, 295696, 351139, 369620, 702278, 739240, 1404556, 1478480, 1755695, 2809112, 3511390, 5618224, 7022780, 14045560, 28091120]

約数ペア:

[(1, 28091120), (2, 14045560), (4, 7022780), (5, 5618224), (8, 3511390), (10, 2809112), (16, 1755695), (19, 1478480), (20, 1404556), (38, 739240), (40, 702278), (76, 369620), (80, 351139), (95, 295696), (152, 184810), (190, 147848), (304, 92405), (380, 73924), (760, 36962), (1520, 18481)]