21998490620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{290141}}^1$

素因数の和:290390

約数の個数: 48

約数和(自身を含む): 49133806848

約数和(自身を除く): 27135316228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 223, 340, 446, 892, 1115, 2230, 3791, 4460, 7582, 15164, 18955, 37910, 75820, 290141, 580282, 1160564, 1450705, 2901410, 4932397, 5802820, 9864794, 19729588, 24661985, 49323970, 64701443, 98647940, 129402886, 258805772, 323507215, 647014430, 1099924531, 1294028860, 2199849062, 4399698124, 5499622655, 10999245310, 21998490620]

約数ペア:

[(1, 21998490620), (2, 10999245310), (4, 5499622655), (5, 4399698124), (10, 2199849062), (17, 1294028860), (20, 1099924531), (34, 647014430), (68, 323507215), (85, 258805772), (170, 129402886), (223, 98647940), (340, 64701443), (446, 49323970), (892, 24661985), (1115, 19729588), (2230, 9864794), (3791, 5802820), (4460, 4932397), (7582, 2901410), (15164, 1450705), (18955, 1160564), (37910, 580282), (75820, 290141)]