20491100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1$

素因数の和:495

約数の個数: 72

約数和(自身を含む): 51642528

約数和(自身を除く): 31151428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 73, 100, 140, 146, 175, 292, 350, 365, 401, 511, 700, 730, 802, 1022, 1460, 1604, 1825, 2005, 2044, 2555, 2807, 3650, 4010, 5110, 5614, 7300, 8020, 10025, 10220, 11228, 12775, 14035, 20050, 25550, 28070, 29273, 40100, 51100, 56140, 58546, 70175, 117092, 140350, 146365, 204911, 280700, 292730, 409822, 585460, 731825, 819644, 1024555, 1463650, 2049110, 2927300, 4098220, 5122775, 10245550, 20491100]

約数ペア:

[(1, 20491100), (2, 10245550), (4, 5122775), (5, 4098220), (7, 2927300), (10, 2049110), (14, 1463650), (20, 1024555), (25, 819644), (28, 731825), (35, 585460), (50, 409822), (70, 292730), (73, 280700), (100, 204911), (140, 146365), (146, 140350), (175, 117092), (292, 70175), (350, 58546), (365, 56140), (401, 51100), (511, 40100), (700, 29273), (730, 28070), (802, 25550), (1022, 20050), (1460, 14035), (1604, 12775), (1825, 11228), (2005, 10220), (2044, 10025), (2555, 8020), (2807, 7300), (3650, 5614), (4010, 5110)]