12708140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 27955200

約数和(自身を除く): 15247060

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 103, 124, 155, 199, 206, 310, 398, 412, 515, 620, 796, 995, 1030, 1990, 2060, 3193, 3980, 6169, 6386, 12338, 12772, 15965, 20497, 24676, 30845, 31930, 40994, 61690, 63860, 81988, 102485, 123380, 204970, 409940, 635407, 1270814, 2541628, 3177035, 6354070, 12708140]

約数ペア:

[(1, 12708140), (2, 6354070), (4, 3177035), (5, 2541628), (10, 1270814), (20, 635407), (31, 409940), (62, 204970), (103, 123380), (124, 102485), (155, 81988), (199, 63860), (206, 61690), (310, 40994), (398, 31930), (412, 30845), (515, 24676), (620, 20497), (796, 15965), (995, 12772), (1030, 12338), (1990, 6386), (2060, 6169), (3193, 3980)]