20487250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 45826560

約数和(自身を除く): 25339310

約数列:

[1, 2, 5, 7, 10, 14, 23, 25, 35, 46, 50, 70, 115, 125, 161, 175, 230, 250, 322, 350, 509, 575, 805, 875, 1018, 1150, 1610, 1750, 2545, 2875, 3563, 4025, 5090, 5750, 7126, 8050, 11707, 12725, 17815, 20125, 23414, 25450, 35630, 40250, 58535, 63625, 81949, 89075, 117070, 127250, 163898, 178150, 292675, 409745, 445375, 585350, 819490, 890750, 1463375, 2048725, 2926750, 4097450, 10243625, 20487250]

約数ペア:

[(1, 20487250), (2, 10243625), (5, 4097450), (7, 2926750), (10, 2048725), (14, 1463375), (23, 890750), (25, 819490), (35, 585350), (46, 445375), (50, 409745), (70, 292675), (115, 178150), (125, 163898), (161, 127250), (175, 117070), (230, 89075), (250, 81949), (322, 63625), (350, 58535), (509, 40250), (575, 35630), (805, 25450), (875, 23414), (1018, 20125), (1150, 17815), (1610, 12725), (1750, 11707), (2545, 8050), (2875, 7126), (3563, 5750), (4025, 5090)]