2499681280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15749}}^1$

素因数の和:15805

約数の個数: 88

約数和(自身を含む): 6190128000

約数和(自身を除く): 3690446720

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, 1024, 1240, 1280, 1984, 2480, 2560, 3968, 4960, 5120, 7936, 9920, 15749, 15872, 19840, 31498, 31744, 39680, 62996, 78745, 79360, 125992, 157490, 158720, 251984, 314980, 488219, 503968, 629960, 976438, 1007936, 1259920, 1952876, 2015872, 2441095, 2519840, 3905752, 4031744, 4882190, 5039680, 7811504, 8063488, 9764380, 10079360, 15623008, 16126976, 19528760, 20158720, 31246016, 39057520, 40317440, 62492032, 78115040, 80634880, 124984064, 156230080, 249968128, 312460160, 499936256, 624920320, 1249840640, 2499681280]

約数ペア:

[(1, 2499681280), (2, 1249840640), (4, 624920320), (5, 499936256), (8, 312460160), (10, 249968128), (16, 156230080), (20, 124984064), (31, 80634880), (32, 78115040), (40, 62492032), (62, 40317440), (64, 39057520), (80, 31246016), (124, 20158720), (128, 19528760), (155, 16126976), (160, 15623008), (248, 10079360), (256, 9764380), (310, 8063488), (320, 7811504), (496, 5039680), (512, 4882190), (620, 4031744), (640, 3905752), (992, 2519840), (1024, 2441095), (1240, 2015872), (1280, 1952876), (1984, 1259920), (2480, 1007936), (2560, 976438), (3968, 629960), (4960, 503968), (5120, 488219), (7936, 314980), (9920, 251984), (15749, 158720), (15872, 157490), (19840, 125992), (31498, 79360), (31744, 78745), (39680, 62996)]