18721850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:527

約数の個数: 48

約数和(自身を含む): 40176000

約数和(自身を除く): 21454150

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 149, 175, 298, 350, 359, 718, 745, 1043, 1490, 1795, 2086, 2513, 3590, 3725, 5026, 5215, 7450, 8975, 10430, 12565, 17950, 25130, 26075, 52150, 53491, 62825, 106982, 125650, 267455, 374437, 534910, 748874, 1337275, 1872185, 2674550, 3744370, 9360925, 18721850]

約数ペア:

[(1, 18721850), (2, 9360925), (5, 3744370), (7, 2674550), (10, 1872185), (14, 1337275), (25, 748874), (35, 534910), (50, 374437), (70, 267455), (149, 125650), (175, 106982), (298, 62825), (350, 53491), (359, 52150), (718, 26075), (745, 25130), (1043, 17950), (1490, 12565), (1795, 10430), (2086, 8975), (2513, 7450), (3590, 5215), (3725, 5026)]