21690700

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6997}}^1$

素因数の和:7042

約数の個数: 36

約数和(自身を含む): 48594112

約数和(自身を除く): 26903412

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6997, 13994, 27988, 34985, 69970, 139940, 174925, 216907, 349850, 433814, 699700, 867628, 1084535, 2169070, 4338140, 5422675, 10845350, 21690700]

約数ペア:

[(1, 21690700), (2, 10845350), (4, 5422675), (5, 4338140), (10, 2169070), (20, 1084535), (25, 867628), (31, 699700), (50, 433814), (62, 349850), (100, 216907), (124, 174925), (155, 139940), (310, 69970), (620, 34985), (775, 27988), (1550, 13994), (3100, 6997)]