20795060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{661}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 51771048

約数和(自身を除く): 30975988

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 661, 715, 1210, 1322, 1430, 1573, 2420, 2644, 2860, 3146, 3305, 6292, 6610, 7271, 7865, 8593, 13220, 14542, 15730, 17186, 29084, 31460, 34372, 36355, 42965, 72710, 79981, 85930, 94523, 145420, 159962, 171860, 189046, 319924, 378092, 399905, 472615, 799810, 945230, 1039753, 1599620, 1890460, 2079506, 4159012, 5198765, 10397530, 20795060]

約数ペア:

[(1, 20795060), (2, 10397530), (4, 5198765), (5, 4159012), (10, 2079506), (11, 1890460), (13, 1599620), (20, 1039753), (22, 945230), (26, 799810), (44, 472615), (52, 399905), (55, 378092), (65, 319924), (110, 189046), (121, 171860), (130, 159962), (143, 145420), (220, 94523), (242, 85930), (260, 79981), (286, 72710), (484, 42965), (572, 36355), (605, 34372), (661, 31460), (715, 29084), (1210, 17186), (1322, 15730), (1430, 14542), (1573, 13220), (2420, 8593), (2644, 7865), (2860, 7271), (3146, 6610), (3305, 6292)]