51451720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 119977200

約数和(自身を除く): 68525480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 137, 164, 205, 229, 274, 328, 410, 458, 548, 685, 820, 916, 1096, 1145, 1370, 1640, 1832, 2290, 2740, 4580, 5480, 5617, 9160, 9389, 11234, 18778, 22468, 28085, 31373, 37556, 44936, 46945, 56170, 62746, 75112, 93890, 112340, 125492, 156865, 187780, 224680, 250984, 313730, 375560, 627460, 1254920, 1286293, 2572586, 5145172, 6431465, 10290344, 12862930, 25725860, 51451720]

約数ペア:

[(1, 51451720), (2, 25725860), (4, 12862930), (5, 10290344), (8, 6431465), (10, 5145172), (20, 2572586), (40, 1286293), (41, 1254920), (82, 627460), (137, 375560), (164, 313730), (205, 250984), (229, 224680), (274, 187780), (328, 156865), (410, 125492), (458, 112340), (548, 93890), (685, 75112), (820, 62746), (916, 56170), (1096, 46945), (1145, 44936), (1370, 37556), (1640, 31373), (1832, 28085), (2290, 22468), (2740, 18778), (4580, 11234), (5480, 9389), (5617, 9160)]