21145180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2069}}^1$

素因数の和:2158

約数の個数: 48

約数和(自身を含む): 51468480

約数和(自身を除く): 30323300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2044, 2069, 2555, 4138, 5110, 8276, 10220, 10345, 14483, 20690, 28966, 41380, 57932, 72415, 144830, 151037, 289660, 302074, 604148, 755185, 1057259, 1510370, 2114518, 3020740, 4229036, 5286295, 10572590, 21145180]

約数ペア:

[(1, 21145180), (2, 10572590), (4, 5286295), (5, 4229036), (7, 3020740), (10, 2114518), (14, 1510370), (20, 1057259), (28, 755185), (35, 604148), (70, 302074), (73, 289660), (140, 151037), (146, 144830), (292, 72415), (365, 57932), (511, 41380), (730, 28966), (1022, 20690), (1460, 14483), (2044, 10345), (2069, 10220), (2555, 8276), (4138, 5110)]