21004732

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3457}}^1$

素因数の和:3506

約数の個数: 36

約数和(自身を含む): 44151744

約数和(自身を除く): 23147012

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 3457, 6076, 6914, 13828, 24199, 48398, 96796, 107167, 169393, 214334, 338786, 428668, 677572, 750169, 1500338, 3000676, 5251183, 10502366, 21004732]

約数ペア:

[(1, 21004732), (2, 10502366), (4, 5251183), (7, 3000676), (14, 1500338), (28, 750169), (31, 677572), (49, 428668), (62, 338786), (98, 214334), (124, 169393), (196, 107167), (217, 96796), (434, 48398), (868, 24199), (1519, 13828), (3038, 6914), (3457, 6076)]