19907595

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 37301472

約数和(自身を除く): 17393877

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 53, 85, 153, 159, 255, 265, 477, 491, 765, 795, 901, 1473, 2385, 2455, 2703, 4419, 4505, 7365, 8109, 8347, 13515, 22095, 25041, 26023, 40545, 41735, 75123, 78069, 125205, 130115, 234207, 375615, 390345, 442391, 1171035, 1327173, 2211955, 3981519, 6635865, 19907595]

約数ペア:

[(1, 19907595), (3, 6635865), (5, 3981519), (9, 2211955), (15, 1327173), (17, 1171035), (45, 442391), (51, 390345), (53, 375615), (85, 234207), (153, 130115), (159, 125205), (255, 78069), (265, 75123), (477, 41735), (491, 40545), (765, 26023), (795, 25041), (901, 22095), (1473, 13515), (2385, 8347), (2455, 8109), (2703, 7365), (4419, 4505)]