19913530

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 44835840

約数和(自身を除く): 24922310

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 79, 91, 130, 158, 182, 277, 395, 455, 553, 554, 790, 910, 1027, 1106, 1385, 1939, 2054, 2765, 2770, 3601, 3878, 5135, 5530, 7189, 7202, 9695, 10270, 14378, 18005, 19390, 21883, 25207, 35945, 36010, 43766, 50414, 71890, 109415, 126035, 153181, 218830, 252070, 284479, 306362, 568958, 765905, 1422395, 1531810, 1991353, 2844790, 3982706, 9956765, 19913530]

約数ペア:

[(1, 19913530), (2, 9956765), (5, 3982706), (7, 2844790), (10, 1991353), (13, 1531810), (14, 1422395), (26, 765905), (35, 568958), (65, 306362), (70, 284479), (79, 252070), (91, 218830), (130, 153181), (158, 126035), (182, 109415), (277, 71890), (395, 50414), (455, 43766), (553, 36010), (554, 35945), (790, 25207), (910, 21883), (1027, 19390), (1106, 18005), (1385, 14378), (1939, 10270), (2054, 9695), (2765, 7202), (2770, 7189), (3601, 5530), (3878, 5135)]