17211220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1249}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 39690000

約数和(自身を除く): 22478780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1249, 1378, 2498, 2756, 3445, 4996, 6245, 6890, 12490, 13780, 16237, 24980, 32474, 64948, 66197, 81185, 132394, 162370, 264788, 324740, 330985, 661970, 860561, 1323940, 1721122, 3442244, 4302805, 8605610, 17211220]

約数ペア:

[(1, 17211220), (2, 8605610), (4, 4302805), (5, 3442244), (10, 1721122), (13, 1323940), (20, 860561), (26, 661970), (52, 330985), (53, 324740), (65, 264788), (106, 162370), (130, 132394), (212, 81185), (260, 66197), (265, 64948), (530, 32474), (689, 24980), (1060, 16237), (1249, 13780), (1378, 12490), (2498, 6890), (2756, 6245), (3445, 4996)]