21251070

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{607}}^1$

素因数の和:1009

約数の個数: 48

約数和(自身を含む): 55486080

約数和(自身を除く): 34235010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 389, 607, 778, 1167, 1214, 1821, 1945, 2334, 3035, 3501, 3642, 3890, 5463, 5835, 6070, 7002, 9105, 10926, 11670, 17505, 18210, 27315, 35010, 54630, 236123, 472246, 708369, 1180615, 1416738, 2125107, 2361230, 3541845, 4250214, 7083690, 10625535, 21251070]

約数ペア:

[(1, 21251070), (2, 10625535), (3, 7083690), (5, 4250214), (6, 3541845), (9, 2361230), (10, 2125107), (15, 1416738), (18, 1180615), (30, 708369), (45, 472246), (90, 236123), (389, 54630), (607, 35010), (778, 27315), (1167, 18210), (1214, 17505), (1821, 11670), (1945, 10926), (2334, 9105), (3035, 7002), (3501, 6070), (3642, 5835), (3890, 5463)]