20509790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12739}}^1$

素因数の和:12776

約数の個数: 32

約数和(自身を含む): 44029440

約数和(自身を除く): 23519650

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 12739, 25478, 63695, 89173, 127390, 178346, 292997, 445865, 585994, 891730, 1464985, 2050979, 2929970, 4101958, 10254895, 20509790]

約数ペア:

[(1, 20509790), (2, 10254895), (5, 4101958), (7, 2929970), (10, 2050979), (14, 1464985), (23, 891730), (35, 585994), (46, 445865), (70, 292997), (115, 178346), (161, 127390), (230, 89173), (322, 63695), (805, 25478), (1610, 12739)]