79121920

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{997}}^1$

素因数の和:1051

約数の個数: 80

約数和(自身を含む): 196023168

約数和(自身を除く): 116901248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 997, 1240, 1280, 1984, 1994, 2480, 2560, 3968, 3988, 4960, 4985, 7936, 7976, 9920, 9970, 15872, 15952, 19840, 19940, 30907, 31904, 39680, 39880, 61814, 63808, 79360, 79760, 123628, 127616, 154535, 159520, 247256, 255232, 309070, 319040, 494512, 510464, 618140, 638080, 989024, 1236280, 1276160, 1978048, 2472560, 2552320, 3956096, 4945120, 7912192, 9890240, 15824384, 19780480, 39560960, 79121920]

約数ペア:

[(1, 79121920), (2, 39560960), (4, 19780480), (5, 15824384), (8, 9890240), (10, 7912192), (16, 4945120), (20, 3956096), (31, 2552320), (32, 2472560), (40, 1978048), (62, 1276160), (64, 1236280), (80, 989024), (124, 638080), (128, 618140), (155, 510464), (160, 494512), (248, 319040), (256, 309070), (310, 255232), (320, 247256), (496, 159520), (512, 154535), (620, 127616), (640, 123628), (992, 79760), (997, 79360), (1240, 63808), (1280, 61814), (1984, 39880), (1994, 39680), (2480, 31904), (2560, 30907), (3968, 19940), (3988, 19840), (4960, 15952), (4985, 15872), (7936, 9970), (7976, 9920)]