21185152

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 46022400

約数和(自身を除く): 24837248

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 76, 124, 128, 152, 248, 281, 304, 496, 562, 589, 608, 992, 1124, 1178, 1216, 1984, 2248, 2356, 2432, 3968, 4496, 4712, 5339, 8711, 8992, 9424, 10678, 17422, 17984, 18848, 21356, 34844, 35968, 37696, 42712, 69688, 75392, 85424, 139376, 165509, 170848, 278752, 331018, 341696, 557504, 662036, 683392, 1115008, 1324072, 2648144, 5296288, 10592576, 21185152]

約数ペア:

[(1, 21185152), (2, 10592576), (4, 5296288), (8, 2648144), (16, 1324072), (19, 1115008), (31, 683392), (32, 662036), (38, 557504), (62, 341696), (64, 331018), (76, 278752), (124, 170848), (128, 165509), (152, 139376), (248, 85424), (281, 75392), (304, 69688), (496, 42712), (562, 37696), (589, 35968), (608, 34844), (992, 21356), (1124, 18848), (1178, 17984), (1216, 17422), (1984, 10678), (2248, 9424), (2356, 8992), (2432, 8711), (3968, 5339), (4496, 4712)]