20105680040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{12259561}}^1$

素因数の和:12259613

約数の個数: 32

約数和(自身を含む): 46341144360

約数和(自身を除く): 26235464320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 12259561, 24519122, 49038244, 61297805, 98076488, 122595610, 245191220, 490382440, 502642001, 1005284002, 2010568004, 2513210005, 4021136008, 5026420010, 10052840020, 20105680040]

約数ペア:

[(1, 20105680040), (2, 10052840020), (4, 5026420010), (5, 4021136008), (8, 2513210005), (10, 2010568004), (20, 1005284002), (40, 502642001), (41, 490382440), (82, 245191220), (164, 122595610), (205, 98076488), (328, 61297805), (410, 49038244), (820, 24519122), (1640, 12259561)]