81286484

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 155641920

約数和(自身を除く): 74355436

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 137, 148, 211, 274, 422, 548, 703, 844, 1406, 2603, 2812, 4009, 5069, 5206, 7807, 8018, 10138, 10412, 15614, 16036, 20276, 28907, 31228, 57814, 96311, 115628, 148333, 192622, 296666, 385244, 549233, 593332, 1069559, 1098466, 2139118, 2196932, 4278236, 20321621, 40643242, 81286484]

約数ペア:

[(1, 81286484), (2, 40643242), (4, 20321621), (19, 4278236), (37, 2196932), (38, 2139118), (74, 1098466), (76, 1069559), (137, 593332), (148, 549233), (211, 385244), (274, 296666), (422, 192622), (548, 148333), (703, 115628), (844, 96311), (1406, 57814), (2603, 31228), (2812, 28907), (4009, 20276), (5069, 16036), (5206, 15614), (7807, 10412), (8018, 10138)]