79201280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:555

約数の個数: 88

約数和(自身を含む): 196512000

約数和(自身を除く): 117310720

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, 499, 512, 620, 640, 992, 998, 1024, 1240, 1280, 1984, 1996, 2480, 2495, 2560, 3968, 3992, 4960, 4990, 5120, 7936, 7984, 9920, 9980, 15469, 15872, 15968, 19840, 19960, 30938, 31744, 31936, 39680, 39920, 61876, 63872, 77345, 79360, 79840, 123752, 127744, 154690, 158720, 159680, 247504, 255488, 309380, 319360, 495008, 510976, 618760, 638720, 990016, 1237520, 1277440, 1980032, 2475040, 2554880, 3960064, 4950080, 7920128, 9900160, 15840256, 19800320, 39600640, 79201280]

約数ペア:

[(1, 79201280), (2, 39600640), (4, 19800320), (5, 15840256), (8, 9900160), (10, 7920128), (16, 4950080), (20, 3960064), (31, 2554880), (32, 2475040), (40, 1980032), (62, 1277440), (64, 1237520), (80, 990016), (124, 638720), (128, 618760), (155, 510976), (160, 495008), (248, 319360), (256, 309380), (310, 255488), (320, 247504), (496, 159680), (499, 158720), (512, 154690), (620, 127744), (640, 123752), (992, 79840), (998, 79360), (1024, 77345), (1240, 63872), (1280, 61876), (1984, 39920), (1996, 39680), (2480, 31936), (2495, 31744), (2560, 30938), (3968, 19960), (3992, 19840), (4960, 15968), (4990, 15872), (5120, 15469), (7936, 9980), (7984, 9920)]