319582720

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4027}}^1$

素因数の和:4081

約数の個数: 80

約数和(自身を含む): 791163648

約数和(自身を除く): 471580928

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, 1240, 1280, 1984, 2480, 2560, 3968, 4027, 4960, 7936, 8054, 9920, 15872, 16108, 19840, 20135, 32216, 39680, 40270, 64432, 79360, 80540, 124837, 128864, 161080, 249674, 257728, 322160, 499348, 515456, 624185, 644320, 998696, 1030912, 1248370, 1288640, 1997392, 2061824, 2496740, 2577280, 3994784, 4993480, 5154560, 7989568, 9986960, 10309120, 15979136, 19973920, 31958272, 39947840, 63916544, 79895680, 159791360, 319582720]

約数ペア:

[(1, 319582720), (2, 159791360), (4, 79895680), (5, 63916544), (8, 39947840), (10, 31958272), (16, 19973920), (20, 15979136), (31, 10309120), (32, 9986960), (40, 7989568), (62, 5154560), (64, 4993480), (80, 3994784), (124, 2577280), (128, 2496740), (155, 2061824), (160, 1997392), (248, 1288640), (256, 1248370), (310, 1030912), (320, 998696), (496, 644320), (512, 624185), (620, 515456), (640, 499348), (992, 322160), (1240, 257728), (1280, 249674), (1984, 161080), (2480, 128864), (2560, 124837), (3968, 80540), (4027, 79360), (4960, 64432), (7936, 40270), (8054, 39680), (9920, 32216), (15872, 20135), (16108, 19840)]