81838260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64951}}^1$

素因数の和:64973

約数の個数: 72

約数和(自身を含む): 283710336

約数和(自身を除く): 201872076

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64951, 129902, 194853, 259804, 324755, 389706, 454657, 584559, 649510, 779412, 909314, 974265, 1169118, 1299020, 1363971, 1818628, 1948530, 2273285, 2338236, 2727942, 2922795, 3897060, 4091913, 4546570, 5455884, 5845590, 6819855, 8183826, 9093140, 11691180, 13639710, 16367652, 20459565, 27279420, 40919130, 81838260]

約数ペア:

[(1, 81838260), (2, 40919130), (3, 27279420), (4, 20459565), (5, 16367652), (6, 13639710), (7, 11691180), (9, 9093140), (10, 8183826), (12, 6819855), (14, 5845590), (15, 5455884), (18, 4546570), (20, 4091913), (21, 3897060), (28, 2922795), (30, 2727942), (35, 2338236), (36, 2273285), (42, 1948530), (45, 1818628), (60, 1363971), (63, 1299020), (70, 1169118), (84, 974265), (90, 909314), (105, 779412), (126, 649510), (140, 584559), (180, 454657), (210, 389706), (252, 324755), (315, 259804), (420, 194853), (630, 129902), (1260, 64951)]