981028480

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:498

約数の個数: 128

約数和(自身を含む): 2442908160

約数和(自身を除く): 1461879680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 197, 248, 251, 310, 320, 394, 496, 502, 620, 640, 788, 985, 992, 1004, 1240, 1255, 1576, 1970, 1984, 2008, 2480, 2510, 3152, 3940, 3968, 4016, 4960, 5020, 6107, 6304, 7781, 7880, 8032, 9920, 10040, 12214, 12608, 15562, 15760, 16064, 19840, 20080, 24428, 25216, 30535, 31124, 31520, 32128, 38905, 40160, 48856, 49447, 61070, 62248, 63040, 77810, 80320, 97712, 98894, 122140, 124496, 126080, 155620, 160640, 195424, 197788, 244280, 247235, 248992, 311240, 390848, 395576, 488560, 494470, 497984, 622480, 781696, 791152, 977120, 988940, 995968, 1244960, 1532857, 1582304, 1954240, 1977880, 2489920, 3065714, 3164608, 3908480, 3955760, 4979840, 6131428, 6329216, 7664285, 7911520, 12262856, 15328570, 15823040, 24525712, 30657140, 31646080, 49051424, 61314280, 98102848, 122628560, 196205696, 245257120, 490514240, 981028480]

約数ペア:

[(1, 981028480), (2, 490514240), (4, 245257120), (5, 196205696), (8, 122628560), (10, 98102848), (16, 61314280), (20, 49051424), (31, 31646080), (32, 30657140), (40, 24525712), (62, 15823040), (64, 15328570), (80, 12262856), (124, 7911520), (128, 7664285), (155, 6329216), (160, 6131428), (197, 4979840), (248, 3955760), (251, 3908480), (310, 3164608), (320, 3065714), (394, 2489920), (496, 1977880), (502, 1954240), (620, 1582304), (640, 1532857), (788, 1244960), (985, 995968), (992, 988940), (1004, 977120), (1240, 791152), (1255, 781696), (1576, 622480), (1970, 497984), (1984, 494470), (2008, 488560), (2480, 395576), (2510, 390848), (3152, 311240), (3940, 248992), (3968, 247235), (4016, 244280), (4960, 197788), (5020, 195424), (6107, 160640), (6304, 155620), (7781, 126080), (7880, 124496), (8032, 122140), (9920, 98894), (10040, 97712), (12214, 80320), (12608, 77810), (15562, 63040), (15760, 62248), (16064, 61070), (19840, 49447), (20080, 48856), (24428, 40160), (25216, 38905), (30535, 32128), (31124, 31520)]