20109440

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2417}}^1$

素因数の和:2449

約数の個数: 64

約数和(自身を含む): 51793560

約数和(自身を除く): 31684120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2417, 4160, 4834, 8320, 9668, 12085, 19336, 24170, 31421, 38672, 48340, 62842, 77344, 96680, 125684, 154688, 157105, 193360, 251368, 309376, 314210, 386720, 502736, 628420, 773440, 1005472, 1256840, 1546880, 2010944, 2513680, 4021888, 5027360, 10054720, 20109440]

約数ペア:

[(1, 20109440), (2, 10054720), (4, 5027360), (5, 4021888), (8, 2513680), (10, 2010944), (13, 1546880), (16, 1256840), (20, 1005472), (26, 773440), (32, 628420), (40, 502736), (52, 386720), (64, 314210), (65, 309376), (80, 251368), (104, 193360), (128, 157105), (130, 154688), (160, 125684), (208, 96680), (260, 77344), (320, 62842), (416, 48340), (520, 38672), (640, 31421), (832, 24170), (1040, 19336), (1664, 12085), (2080, 9668), (2417, 8320), (4160, 4834)]