20561450

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4519}}^1$

素因数の和:4551

約数の個数: 48

約数和(自身を含む): 47080320

約数和(自身を除く): 26518870

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 175, 182, 325, 350, 455, 650, 910, 2275, 4519, 4550, 9038, 22595, 31633, 45190, 58747, 63266, 112975, 117494, 158165, 225950, 293735, 316330, 411229, 587470, 790825, 822458, 1468675, 1581650, 2056145, 2937350, 4112290, 10280725, 20561450]

約数ペア:

[(1, 20561450), (2, 10280725), (5, 4112290), (7, 2937350), (10, 2056145), (13, 1581650), (14, 1468675), (25, 822458), (26, 790825), (35, 587470), (50, 411229), (65, 316330), (70, 293735), (91, 225950), (130, 158165), (175, 117494), (182, 112975), (325, 63266), (350, 58747), (455, 45190), (650, 31633), (910, 22595), (2275, 9038), (4519, 4550)]