8160640

素因数分解:

$2^7\times 5^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 20049120

約数和(自身を除く): 11888480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 311, 320, 328, 410, 622, 640, 656, 820, 1244, 1312, 1555, 1640, 2488, 2624, 3110, 3280, 4976, 5248, 6220, 6560, 9952, 12440, 12751, 13120, 19904, 24880, 25502, 26240, 39808, 49760, 51004, 63755, 99520, 102008, 127510, 199040, 204016, 255020, 408032, 510040, 816064, 1020080, 1632128, 2040160, 4080320, 8160640]

約数ペア:

[(1, 8160640), (2, 4080320), (4, 2040160), (5, 1632128), (8, 1020080), (10, 816064), (16, 510040), (20, 408032), (32, 255020), (40, 204016), (41, 199040), (64, 127510), (80, 102008), (82, 99520), (128, 63755), (160, 51004), (164, 49760), (205, 39808), (311, 26240), (320, 25502), (328, 24880), (410, 19904), (622, 13120), (640, 12751), (656, 12440), (820, 9952), (1244, 6560), (1312, 6220), (1555, 5248), (1640, 4976), (2488, 3280), (2624, 3110)]