87320840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128413}}^1$

素因数の和:128441

約数の個数: 32

約数和(自身を含む): 208030680

約数和(自身を除く): 120709840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 128413, 256826, 513652, 642065, 1027304, 1284130, 2183021, 2568260, 4366042, 5136520, 8732084, 10915105, 17464168, 21830210, 43660420, 87320840]

約数ペア:

[(1, 87320840), (2, 43660420), (4, 21830210), (5, 17464168), (8, 10915105), (10, 8732084), (17, 5136520), (20, 4366042), (34, 2568260), (40, 2183021), (68, 1284130), (85, 1027304), (136, 642065), (170, 513652), (340, 256826), (680, 128413)]