863660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 2150400

約数和(自身を除く): 1286740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 199, 217, 310, 398, 434, 620, 796, 868, 995, 1085, 1393, 1990, 2170, 2786, 3980, 4340, 5572, 6169, 6965, 12338, 13930, 24676, 27860, 30845, 43183, 61690, 86366, 123380, 172732, 215915, 431830, 863660]

約数ペア:

[(1, 863660), (2, 431830), (4, 215915), (5, 172732), (7, 123380), (10, 86366), (14, 61690), (20, 43183), (28, 30845), (31, 27860), (35, 24676), (62, 13930), (70, 12338), (124, 6965), (140, 6169), (155, 5572), (199, 4340), (217, 3980), (310, 2786), (398, 2170), (434, 1990), (620, 1393), (796, 1085), (868, 995)]