81528164

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 157852800

約数和(自身を除く): 76324636

約数列:

[1, 2, 4, 19, 29, 38, 58, 71, 76, 116, 142, 284, 521, 551, 1042, 1102, 1349, 2059, 2084, 2204, 2698, 4118, 5396, 8236, 9899, 15109, 19798, 30218, 36991, 39121, 39596, 60436, 73982, 78242, 147964, 156484, 287071, 574142, 702829, 1072739, 1148284, 1405658, 2145478, 2811316, 4290956, 20382041, 40764082, 81528164]

約数ペア:

[(1, 81528164), (2, 40764082), (4, 20382041), (19, 4290956), (29, 2811316), (38, 2145478), (58, 1405658), (71, 1148284), (76, 1072739), (116, 702829), (142, 574142), (284, 287071), (521, 156484), (551, 147964), (1042, 78242), (1102, 73982), (1349, 60436), (2059, 39596), (2084, 39121), (2204, 36991), (2698, 30218), (4118, 19798), (5396, 15109), (8236, 9899)]