31881780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{25303}}^1$

素因数の和:25325

約数の個数: 72

約数和(自身を含む): 110527872

約数和(自身を除く): 78646092

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, 25303, 50606, 75909, 101212, 126515, 151818, 177121, 227727, 253030, 303636, 354242, 379545, 455454, 506060, 531363, 708484, 759090, 885605, 910908, 1062726, 1138635, 1518180, 1594089, 1771210, 2125452, 2277270, 2656815, 3188178, 3542420, 4554540, 5313630, 6376356, 7970445, 10627260, 15940890, 31881780]

約数ペア:

[(1, 31881780), (2, 15940890), (3, 10627260), (4, 7970445), (5, 6376356), (6, 5313630), (7, 4554540), (9, 3542420), (10, 3188178), (12, 2656815), (14, 2277270), (15, 2125452), (18, 1771210), (20, 1594089), (21, 1518180), (28, 1138635), (30, 1062726), (35, 910908), (36, 885605), (42, 759090), (45, 708484), (60, 531363), (63, 506060), (70, 455454), (84, 379545), (90, 354242), (105, 303636), (126, 253030), (140, 227727), (180, 177121), (210, 151818), (252, 126515), (315, 101212), (420, 75909), (630, 50606), (1260, 25303)]