1306240

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 3384360

約数和(自身を除く): 2078120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 157, 160, 208, 260, 314, 320, 416, 520, 628, 640, 785, 832, 1040, 1256, 1570, 1664, 2041, 2080, 2512, 3140, 4082, 4160, 5024, 6280, 8164, 8320, 10048, 10205, 12560, 16328, 20096, 20410, 25120, 32656, 40820, 50240, 65312, 81640, 100480, 130624, 163280, 261248, 326560, 653120, 1306240]

約数ペア:

[(1, 1306240), (2, 653120), (4, 326560), (5, 261248), (8, 163280), (10, 130624), (13, 100480), (16, 81640), (20, 65312), (26, 50240), (32, 40820), (40, 32656), (52, 25120), (64, 20410), (65, 20096), (80, 16328), (104, 12560), (128, 10205), (130, 10048), (157, 8320), (160, 8164), (208, 6280), (260, 5024), (314, 4160), (320, 4082), (416, 3140), (520, 2512), (628, 2080), (640, 2041), (785, 1664), (832, 1570), (1040, 1256)]