128976988

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{1069}}^1$

素因数の和:1250

約数の個数: 48

約数和(自身を含む): 268441600

約数和(自身を除く): 139464612

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 139, 217, 278, 434, 556, 868, 973, 1069, 1946, 2138, 3892, 4276, 4309, 7483, 8618, 14966, 17236, 29932, 30163, 33139, 60326, 66278, 120652, 132556, 148591, 231973, 297182, 463946, 594364, 927892, 1040137, 2080274, 4160548, 4606321, 9212642, 18425284, 32244247, 64488494, 128976988]

約数ペア:

[(1, 128976988), (2, 64488494), (4, 32244247), (7, 18425284), (14, 9212642), (28, 4606321), (31, 4160548), (62, 2080274), (124, 1040137), (139, 927892), (217, 594364), (278, 463946), (434, 297182), (556, 231973), (868, 148591), (973, 132556), (1069, 120652), (1946, 66278), (2138, 60326), (3892, 33139), (4276, 30163), (4309, 29932), (7483, 17236), (8618, 14966)]