81465760

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2243}}^1$

素因数の和:2485

約数の個数: 48

約数和(自身を含む): 193396896

約数和(自身を除く): 111931136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 908, 1135, 1816, 2243, 2270, 3632, 4486, 4540, 7264, 8972, 9080, 11215, 17944, 18160, 22430, 35888, 36320, 44860, 71776, 89720, 179440, 358880, 509161, 1018322, 2036644, 2545805, 4073288, 5091610, 8146576, 10183220, 16293152, 20366440, 40732880, 81465760]

約数ペア:

[(1, 81465760), (2, 40732880), (4, 20366440), (5, 16293152), (8, 10183220), (10, 8146576), (16, 5091610), (20, 4073288), (32, 2545805), (40, 2036644), (80, 1018322), (160, 509161), (227, 358880), (454, 179440), (908, 89720), (1135, 71776), (1816, 44860), (2243, 36320), (2270, 35888), (3632, 22430), (4486, 18160), (4540, 17944), (7264, 11215), (8972, 9080)]