861218650

素因数分解:

$2^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{251}}^1\times {\mathrm{421}}^1$

素因数の和:847

約数の個数: 48

約数和(自身を含む): 1621958688

約数和(自身を除く): 760740038

約数列:

[1, 2, 5, 10, 25, 50, 163, 251, 326, 421, 502, 815, 842, 1255, 1630, 2105, 2510, 4075, 4210, 6275, 8150, 10525, 12550, 21050, 40913, 68623, 81826, 105671, 137246, 204565, 211342, 343115, 409130, 528355, 686230, 1022825, 1056710, 1715575, 2045650, 2641775, 3431150, 5283550, 17224373, 34448746, 86121865, 172243730, 430609325, 861218650]

約数ペア:

[(1, 861218650), (2, 430609325), (5, 172243730), (10, 86121865), (25, 34448746), (50, 17224373), (163, 5283550), (251, 3431150), (326, 2641775), (421, 2045650), (502, 1715575), (815, 1056710), (842, 1022825), (1255, 686230), (1630, 528355), (2105, 409130), (2510, 343115), (4075, 211342), (4210, 204565), (6275, 137246), (8150, 105671), (10525, 81826), (12550, 68623), (21050, 40913)]