72320840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2213}}^1$

素因数の和:2286

約数の個数: 64

約数和(自身を含む): 175348800

約数和(自身を除く): 103027960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 2213, 3268, 4085, 4426, 6536, 8170, 8852, 11065, 16340, 17704, 22130, 32680, 42047, 44260, 84094, 88520, 95159, 168188, 190318, 210235, 336376, 380636, 420470, 475795, 761272, 840940, 951590, 1681880, 1808021, 1903180, 3616042, 3806360, 7232084, 9040105, 14464168, 18080210, 36160420, 72320840]

約数ペア:

[(1, 72320840), (2, 36160420), (4, 18080210), (5, 14464168), (8, 9040105), (10, 7232084), (19, 3806360), (20, 3616042), (38, 1903180), (40, 1808021), (43, 1681880), (76, 951590), (86, 840940), (95, 761272), (152, 475795), (172, 420470), (190, 380636), (215, 336376), (344, 210235), (380, 190318), (430, 168188), (760, 95159), (817, 88520), (860, 84094), (1634, 44260), (1720, 42047), (2213, 32680), (3268, 22130), (4085, 17704), (4426, 16340), (6536, 11065), (8170, 8852)]