21043450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1303}}^1$

素因数の和:1351

約数の個数: 48

約数和(自身を含む): 43657920

約数和(自身を除く): 22614470

約数列:

[1, 2, 5, 10, 17, 19, 25, 34, 38, 50, 85, 95, 170, 190, 323, 425, 475, 646, 850, 950, 1303, 1615, 2606, 3230, 6515, 8075, 13030, 16150, 22151, 24757, 32575, 44302, 49514, 65150, 110755, 123785, 221510, 247570, 420869, 553775, 618925, 841738, 1107550, 1237850, 2104345, 4208690, 10521725, 21043450]

約数ペア:

[(1, 21043450), (2, 10521725), (5, 4208690), (10, 2104345), (17, 1237850), (19, 1107550), (25, 841738), (34, 618925), (38, 553775), (50, 420869), (85, 247570), (95, 221510), (170, 123785), (190, 110755), (323, 65150), (425, 49514), (475, 44302), (646, 32575), (850, 24757), (950, 22151), (1303, 16150), (1615, 13030), (2606, 8075), (3230, 6515)]