81404816

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{809}}^1$

素因数の和:1167

約数の個数: 40

約数和(自身を含む): 166730400

約数和(自身を除く): 85325584

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 331, 662, 809, 1324, 1618, 2648, 3236, 5296, 6289, 6472, 12578, 12944, 15371, 25156, 30742, 50312, 61484, 100624, 122968, 245936, 267779, 535558, 1071116, 2142232, 4284464, 5087801, 10175602, 20351204, 40702408, 81404816]

約数ペア:

[(1, 81404816), (2, 40702408), (4, 20351204), (8, 10175602), (16, 5087801), (19, 4284464), (38, 2142232), (76, 1071116), (152, 535558), (304, 267779), (331, 245936), (662, 122968), (809, 100624), (1324, 61484), (1618, 50312), (2648, 30742), (3236, 25156), (5296, 15371), (6289, 12944), (6472, 12578)]