21307080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{353}}^1\times {\mathrm{503}}^1$

素因数の和:870

約数の個数: 64

約数和(自身を含む): 64229760

約数和(自身を除く): 42922680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 353, 503, 706, 1006, 1059, 1412, 1509, 1765, 2012, 2118, 2515, 2824, 3018, 3530, 4024, 4236, 5030, 5295, 6036, 7060, 7545, 8472, 10060, 10590, 12072, 14120, 15090, 20120, 21180, 30180, 42360, 60360, 177559, 355118, 532677, 710236, 887795, 1065354, 1420472, 1775590, 2130708, 2663385, 3551180, 4261416, 5326770, 7102360, 10653540, 21307080]

約数ペア:

[(1, 21307080), (2, 10653540), (3, 7102360), (4, 5326770), (5, 4261416), (6, 3551180), (8, 2663385), (10, 2130708), (12, 1775590), (15, 1420472), (20, 1065354), (24, 887795), (30, 710236), (40, 532677), (60, 355118), (120, 177559), (353, 60360), (503, 42360), (706, 30180), (1006, 21180), (1059, 20120), (1412, 15090), (1509, 14120), (1765, 12072), (2012, 10590), (2118, 10060), (2515, 8472), (2824, 7545), (3018, 7060), (3530, 6036), (4024, 5295), (4236, 5030)]