21235130

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24729670

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 49, 70, 82, 98, 151, 205, 245, 287, 302, 343, 410, 490, 574, 686, 755, 1057, 1435, 1510, 1715, 2009, 2114, 2870, 3430, 4018, 5285, 6191, 7399, 10045, 10570, 12382, 14063, 14798, 20090, 28126, 30955, 36995, 43337, 51793, 61910, 70315, 73990, 86674, 103586, 140630, 216685, 258965, 303359, 433370, 517930, 606718, 1516795, 2123513, 3033590, 4247026, 10617565, 21235130]

約数ペア:

[(1, 21235130), (2, 10617565), (5, 4247026), (7, 3033590), (10, 2123513), (14, 1516795), (35, 606718), (41, 517930), (49, 433370), (70, 303359), (82, 258965), (98, 216685), (151, 140630), (205, 103586), (245, 86674), (287, 73990), (302, 70315), (343, 61910), (410, 51793), (490, 43337), (574, 36995), (686, 30955), (755, 28126), (1057, 20090), (1435, 14798), (1510, 14063), (1715, 12382), (2009, 10570), (2114, 10045), (2870, 7399), (3430, 6191), (4018, 5285)]