1264640

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:57

約数の個数: 88

約数和(自身を含む): 3438960

約数和(自身を除く): 2174320

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 190, 208, 247, 256, 260, 304, 320, 380, 416, 494, 512, 520, 608, 640, 760, 832, 988, 1024, 1040, 1216, 1235, 1280, 1520, 1664, 1976, 2080, 2432, 2470, 2560, 3040, 3328, 3952, 4160, 4864, 4940, 5120, 6080, 6656, 7904, 8320, 9728, 9880, 12160, 13312, 15808, 16640, 19456, 19760, 24320, 31616, 33280, 39520, 48640, 63232, 66560, 79040, 97280, 126464, 158080, 252928, 316160, 632320, 1264640]

約数ペア:

[(1, 1264640), (2, 632320), (4, 316160), (5, 252928), (8, 158080), (10, 126464), (13, 97280), (16, 79040), (19, 66560), (20, 63232), (26, 48640), (32, 39520), (38, 33280), (40, 31616), (52, 24320), (64, 19760), (65, 19456), (76, 16640), (80, 15808), (95, 13312), (104, 12160), (128, 9880), (130, 9728), (152, 8320), (160, 7904), (190, 6656), (208, 6080), (247, 5120), (256, 4940), (260, 4864), (304, 4160), (320, 3952), (380, 3328), (416, 3040), (494, 2560), (512, 2470), (520, 2432), (608, 2080), (640, 1976), (760, 1664), (832, 1520), (988, 1280), (1024, 1235), (1040, 1216)]