21318860

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4423}}^1$

素因数の和:4673

約数の個数: 24

約数和(自身を含む): 44965536

約数和(自身を除く): 23646676

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4423, 4820, 8846, 17692, 22115, 44230, 88460, 1065943, 2131886, 4263772, 5329715, 10659430, 21318860]

約数ペア:

[(1, 21318860), (2, 10659430), (4, 5329715), (5, 4263772), (10, 2131886), (20, 1065943), (241, 88460), (482, 44230), (964, 22115), (1205, 17692), (2410, 8846), (4423, 4820)]