20392580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1913}}^1$

素因数の和:1976

約数の個数: 48

約数和(自身を含む): 47268144

約数和(自身を除く): 26875564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1913, 2132, 2665, 3826, 5330, 7652, 9565, 10660, 19130, 24869, 38260, 49738, 78433, 99476, 124345, 156866, 248690, 313732, 392165, 497380, 784330, 1019629, 1568660, 2039258, 4078516, 5098145, 10196290, 20392580]

約数ペア:

[(1, 20392580), (2, 10196290), (4, 5098145), (5, 4078516), (10, 2039258), (13, 1568660), (20, 1019629), (26, 784330), (41, 497380), (52, 392165), (65, 313732), (82, 248690), (130, 156866), (164, 124345), (205, 99476), (260, 78433), (410, 49738), (533, 38260), (820, 24869), (1066, 19130), (1913, 10660), (2132, 9565), (2665, 7652), (3826, 5330)]