20943520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10069}}^1$

素因数の和:10097

約数の個数: 48

約数和(自身を含む): 53290440

約数和(自身を除く): 32346920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10069, 20138, 40276, 50345, 80552, 100690, 130897, 161104, 201380, 261794, 322208, 402760, 523588, 654485, 805520, 1047176, 1308970, 1611040, 2094352, 2617940, 4188704, 5235880, 10471760, 20943520]

約数ペア:

[(1, 20943520), (2, 10471760), (4, 5235880), (5, 4188704), (8, 2617940), (10, 2094352), (13, 1611040), (16, 1308970), (20, 1047176), (26, 805520), (32, 654485), (40, 523588), (52, 402760), (65, 322208), (80, 261794), (104, 201380), (130, 161104), (160, 130897), (208, 100690), (260, 80552), (416, 50345), (520, 40276), (1040, 20138), (2080, 10069)]