20695600

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{1669}}^1$

素因数の和:1718

約数の個数: 60

約数和(自身を含む): 51355840

約数和(自身を除く): 30660240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 1669, 2480, 3100, 3338, 6200, 6676, 8345, 12400, 13352, 16690, 26704, 33380, 41725, 51739, 66760, 83450, 103478, 133520, 166900, 206956, 258695, 333800, 413912, 517390, 667600, 827824, 1034780, 1293475, 2069560, 2586950, 4139120, 5173900, 10347800, 20695600]

約数ペア:

[(1, 20695600), (2, 10347800), (4, 5173900), (5, 4139120), (8, 2586950), (10, 2069560), (16, 1293475), (20, 1034780), (25, 827824), (31, 667600), (40, 517390), (50, 413912), (62, 333800), (80, 258695), (100, 206956), (124, 166900), (155, 133520), (200, 103478), (248, 83450), (310, 66760), (400, 51739), (496, 41725), (620, 33380), (775, 26704), (1240, 16690), (1550, 13352), (1669, 12400), (2480, 8345), (3100, 6676), (3338, 6200)]