19423960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 46759680

約数和(自身を除く): 27335720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 491, 860, 920, 982, 989, 1720, 1964, 1978, 2455, 3928, 3956, 4910, 4945, 7912, 9820, 9890, 11293, 19640, 19780, 21113, 22586, 39560, 42226, 45172, 56465, 84452, 90344, 105565, 112930, 168904, 211130, 225860, 422260, 451720, 485599, 844520, 971198, 1942396, 2427995, 3884792, 4855990, 9711980, 19423960]

約数ペア:

[(1, 19423960), (2, 9711980), (4, 4855990), (5, 3884792), (8, 2427995), (10, 1942396), (20, 971198), (23, 844520), (40, 485599), (43, 451720), (46, 422260), (86, 225860), (92, 211130), (115, 168904), (172, 112930), (184, 105565), (215, 90344), (230, 84452), (344, 56465), (430, 45172), (460, 42226), (491, 39560), (860, 22586), (920, 21113), (982, 19780), (989, 19640), (1720, 11293), (1964, 9890), (1978, 9820), (2455, 7912), (3928, 4945), (3956, 4910)]