1980280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1597}}^1$

素因数の和:1639

約数の個数: 32

約数和(自身を含む): 4602240

約数和(自身を除く): 2621960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 1597, 3194, 6388, 7985, 12776, 15970, 31940, 49507, 63880, 99014, 198028, 247535, 396056, 495070, 990140, 1980280]

約数ペア:

[(1, 1980280), (2, 990140), (4, 495070), (5, 396056), (8, 247535), (10, 198028), (20, 99014), (31, 63880), (40, 49507), (62, 31940), (124, 15970), (155, 12776), (248, 7985), (310, 6388), (620, 3194), (1240, 1597)]