20007820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{593}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 48299328

約数和(自身を除く): 28291508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 241, 482, 593, 964, 1186, 1205, 1687, 2372, 2410, 2965, 3374, 4151, 4820, 5930, 6748, 8302, 8435, 11860, 16604, 16870, 20755, 33740, 41510, 83020, 142913, 285826, 571652, 714565, 1000391, 1429130, 2000782, 2858260, 4001564, 5001955, 10003910, 20007820]

約数ペア:

[(1, 20007820), (2, 10003910), (4, 5001955), (5, 4001564), (7, 2858260), (10, 2000782), (14, 1429130), (20, 1000391), (28, 714565), (35, 571652), (70, 285826), (140, 142913), (241, 83020), (482, 41510), (593, 33740), (964, 20755), (1186, 16870), (1205, 16604), (1687, 11860), (2372, 8435), (2410, 8302), (2965, 6748), (3374, 5930), (4151, 4820)]