20551312

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{1009}}^1$

素因数の和:1103

約数の個数: 40

約数和(自身を含む): 42581600

約数和(自身を除く): 22030288

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 1009, 1072, 1273, 2018, 2546, 4036, 5092, 8072, 10184, 16144, 19171, 20368, 38342, 67603, 76684, 135206, 153368, 270412, 306736, 540824, 1081648, 1284457, 2568914, 5137828, 10275656, 20551312]

約数ペア:

[(1, 20551312), (2, 10275656), (4, 5137828), (8, 2568914), (16, 1284457), (19, 1081648), (38, 540824), (67, 306736), (76, 270412), (134, 153368), (152, 135206), (268, 76684), (304, 67603), (536, 38342), (1009, 20368), (1072, 19171), (1273, 16144), (2018, 10184), (2546, 8072), (4036, 5092)]