25438720

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1$

素因数の和:565

約数の個数: 80

約数和(自身を含む): 64326240

約数和(自身を除く): 38887520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 512, 523, 608, 640, 760, 1046, 1216, 1280, 1520, 2092, 2432, 2560, 2615, 3040, 4184, 4864, 5230, 6080, 8368, 9728, 9937, 10460, 12160, 16736, 19874, 20920, 24320, 33472, 39748, 41840, 48640, 49685, 66944, 79496, 83680, 99370, 133888, 158992, 167360, 198740, 267776, 317984, 334720, 397480, 635968, 669440, 794960, 1271936, 1338880, 1589920, 2543872, 3179840, 5087744, 6359680, 12719360, 25438720]

約数ペア:

[(1, 25438720), (2, 12719360), (4, 6359680), (5, 5087744), (8, 3179840), (10, 2543872), (16, 1589920), (19, 1338880), (20, 1271936), (32, 794960), (38, 669440), (40, 635968), (64, 397480), (76, 334720), (80, 317984), (95, 267776), (128, 198740), (152, 167360), (160, 158992), (190, 133888), (256, 99370), (304, 83680), (320, 79496), (380, 66944), (512, 49685), (523, 48640), (608, 41840), (640, 39748), (760, 33472), (1046, 24320), (1216, 20920), (1280, 19874), (1520, 16736), (2092, 12160), (2432, 10460), (2560, 9937), (2615, 9728), (3040, 8368), (4184, 6080), (4864, 5230)]