219040780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{397}}^1\times {\mathrm{563}}^1$

素因数の和:983

約数の個数: 72

約数和(自身を含む): 537385968

約数和(自身を除く): 318345188

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 397, 490, 563, 794, 980, 1126, 1588, 1985, 2252, 2779, 2815, 3941, 3970, 5558, 5630, 7882, 7940, 11116, 11260, 13895, 15764, 19453, 19705, 27587, 27790, 38906, 39410, 55174, 55580, 77812, 78820, 97265, 110348, 137935, 194530, 223511, 275870, 389060, 447022, 551740, 894044, 1117555, 1564577, 2235110, 3129154, 4470220, 6258308, 7822885, 10952039, 15645770, 21904078, 31291540, 43808156, 54760195, 109520390, 219040780]

約数ペア:

[(1, 219040780), (2, 109520390), (4, 54760195), (5, 43808156), (7, 31291540), (10, 21904078), (14, 15645770), (20, 10952039), (28, 7822885), (35, 6258308), (49, 4470220), (70, 3129154), (98, 2235110), (140, 1564577), (196, 1117555), (245, 894044), (397, 551740), (490, 447022), (563, 389060), (794, 275870), (980, 223511), (1126, 194530), (1588, 137935), (1985, 110348), (2252, 97265), (2779, 78820), (2815, 77812), (3941, 55580), (3970, 55174), (5558, 39410), (5630, 38906), (7882, 27790), (7940, 27587), (11116, 19705), (11260, 19453), (13895, 15764)]