21980012320

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2803573}}^1$

素因数の和:2803602

約数の個数: 72

約数和(自身を含む): 60405805404

約数和(自身を除く): 38425793084

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 2803573, 5607146, 11214292, 14017865, 19625011, 22428584, 28035730, 39250022, 44857168, 56071460, 78500044, 89714336, 98125055, 112142920, 137375077, 157000088, 196250110, 224285840, 274750154, 314000176, 392500220, 448571680, 549500308, 628000352, 686875385, 785000440, 1099000616, 1373750770, 1570000880, 2198001232, 2747501540, 3140001760, 4396002464, 5495003080, 10990006160, 21980012320]

約数ペア:

[(1, 21980012320), (2, 10990006160), (4, 5495003080), (5, 4396002464), (7, 3140001760), (8, 2747501540), (10, 2198001232), (14, 1570000880), (16, 1373750770), (20, 1099000616), (28, 785000440), (32, 686875385), (35, 628000352), (40, 549500308), (49, 448571680), (56, 392500220), (70, 314000176), (80, 274750154), (98, 224285840), (112, 196250110), (140, 157000088), (160, 137375077), (196, 112142920), (224, 98125055), (245, 89714336), (280, 78500044), (392, 56071460), (490, 44857168), (560, 39250022), (784, 28035730), (980, 22428584), (1120, 19625011), (1568, 14017865), (1960, 11214292), (3920, 5607146), (7840, 2803573)]