891820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:130

約数の個数: 48

約数和(自身を含む): 2062368

約数和(自身を除く): 1170548

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 61, 68, 85, 86, 122, 170, 172, 215, 244, 305, 340, 430, 610, 731, 860, 1037, 1220, 1462, 2074, 2623, 2924, 3655, 4148, 5185, 5246, 7310, 10370, 10492, 13115, 14620, 20740, 26230, 44591, 52460, 89182, 178364, 222955, 445910, 891820]

約数ペア:

[(1, 891820), (2, 445910), (4, 222955), (5, 178364), (10, 89182), (17, 52460), (20, 44591), (34, 26230), (43, 20740), (61, 14620), (68, 13115), (85, 10492), (86, 10370), (122, 7310), (170, 5246), (172, 5185), (215, 4148), (244, 3655), (305, 2924), (340, 2623), (430, 2074), (610, 1462), (731, 1220), (860, 1037)]