21021700

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{509}}^1$

素因数の和:589

約数の個数: 72

約数和(自身を含む): 53121600

約数和(自身を除く): 32099900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 59, 70, 100, 118, 140, 175, 236, 295, 350, 413, 509, 590, 700, 826, 1018, 1180, 1475, 1652, 2036, 2065, 2545, 2950, 3563, 4130, 5090, 5900, 7126, 8260, 10180, 10325, 12725, 14252, 17815, 20650, 25450, 30031, 35630, 41300, 50900, 60062, 71260, 89075, 120124, 150155, 178150, 210217, 300310, 356300, 420434, 600620, 750775, 840868, 1051085, 1501550, 2102170, 3003100, 4204340, 5255425, 10510850, 21021700]

約数ペア:

[(1, 21021700), (2, 10510850), (4, 5255425), (5, 4204340), (7, 3003100), (10, 2102170), (14, 1501550), (20, 1051085), (25, 840868), (28, 750775), (35, 600620), (50, 420434), (59, 356300), (70, 300310), (100, 210217), (118, 178150), (140, 150155), (175, 120124), (236, 89075), (295, 71260), (350, 60062), (413, 50900), (509, 41300), (590, 35630), (700, 30031), (826, 25450), (1018, 20650), (1180, 17815), (1475, 14252), (1652, 12725), (2036, 10325), (2065, 10180), (2545, 8260), (2950, 7126), (3563, 5900), (4130, 5090)]