81420244

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 154828800

約数和(自身を除く): 73408556

約数列:

[1, 2, 4, 19, 38, 71, 76, 79, 142, 158, 191, 284, 316, 382, 764, 1349, 1501, 2698, 3002, 3629, 5396, 5609, 6004, 7258, 11218, 13561, 14516, 15089, 22436, 27122, 30178, 54244, 60356, 106571, 213142, 257659, 286691, 426284, 515318, 573382, 1030636, 1071319, 1146764, 2142638, 4285276, 20355061, 40710122, 81420244]

約数ペア:

[(1, 81420244), (2, 40710122), (4, 20355061), (19, 4285276), (38, 2142638), (71, 1146764), (76, 1071319), (79, 1030636), (142, 573382), (158, 515318), (191, 426284), (284, 286691), (316, 257659), (382, 213142), (764, 106571), (1349, 60356), (1501, 54244), (2698, 30178), (3002, 27122), (3629, 22436), (5396, 15089), (5609, 14516), (6004, 13561), (7258, 11218)]