31078720

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 112

約数和(自身を含む): 81473040

約数和(自身を除く): 50394320

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 32, 34, 40, 58, 64, 68, 80, 85, 116, 136, 145, 160, 170, 197, 232, 272, 290, 320, 340, 394, 464, 493, 544, 580, 680, 788, 928, 985, 986, 1088, 1160, 1360, 1576, 1856, 1970, 1972, 2320, 2465, 2720, 3152, 3349, 3940, 3944, 4640, 4930, 5440, 5713, 6304, 6698, 7880, 7888, 9280, 9860, 11426, 12608, 13396, 15760, 15776, 16745, 19720, 22852, 26792, 28565, 31520, 31552, 33490, 39440, 45704, 53584, 57130, 63040, 66980, 78880, 91408, 97121, 107168, 114260, 133960, 157760, 182816, 194242, 214336, 228520, 267920, 365632, 388484, 457040, 485605, 535840, 776968, 914080, 971210, 1071680, 1553936, 1828160, 1942420, 3107872, 3884840, 6215744, 7769680, 15539360, 31078720]

約数ペア:

[(1, 31078720), (2, 15539360), (4, 7769680), (5, 6215744), (8, 3884840), (10, 3107872), (16, 1942420), (17, 1828160), (20, 1553936), (29, 1071680), (32, 971210), (34, 914080), (40, 776968), (58, 535840), (64, 485605), (68, 457040), (80, 388484), (85, 365632), (116, 267920), (136, 228520), (145, 214336), (160, 194242), (170, 182816), (197, 157760), (232, 133960), (272, 114260), (290, 107168), (320, 97121), (340, 91408), (394, 78880), (464, 66980), (493, 63040), (544, 57130), (580, 53584), (680, 45704), (788, 39440), (928, 33490), (985, 31552), (986, 31520), (1088, 28565), (1160, 26792), (1360, 22852), (1576, 19720), (1856, 16745), (1970, 15776), (1972, 15760), (2320, 13396), (2465, 12608), (2720, 11426), (3152, 9860), (3349, 9280), (3940, 7888), (3944, 7880), (4640, 6698), (4930, 6304), (5440, 5713)]