19799780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 192

約数和(自身を含む): 59609088

約数和(自身を除く): 39809308

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 23, 26, 28, 35, 43, 44, 46, 52, 55, 65, 70, 77, 86, 91, 92, 110, 115, 130, 140, 143, 154, 161, 172, 182, 215, 220, 230, 253, 260, 286, 299, 301, 308, 322, 364, 385, 430, 455, 460, 473, 506, 559, 572, 598, 602, 644, 715, 770, 805, 860, 910, 946, 989, 1001, 1012, 1118, 1196, 1204, 1265, 1430, 1495, 1505, 1540, 1610, 1771, 1820, 1892, 1978, 2002, 2093, 2236, 2365, 2530, 2795, 2860, 2990, 3010, 3220, 3289, 3311, 3542, 3913, 3956, 4004, 4186, 4730, 4945, 5005, 5060, 5590, 5980, 6020, 6149, 6578, 6622, 6923, 7084, 7826, 8372, 8855, 9460, 9890, 10010, 10465, 10879, 11180, 12298, 12857, 13156, 13244, 13846, 15652, 16445, 16555, 17710, 19565, 19780, 20020, 20930, 21758, 23023, 24596, 25714, 27692, 30745, 32890, 33110, 34615, 35420, 39130, 41860, 43043, 43516, 46046, 51428, 54395, 61490, 64285, 65780, 66220, 69230, 76153, 78260, 86086, 89999, 92092, 108790, 115115, 122980, 128570, 138460, 141427, 152306, 172172, 179998, 215215, 217580, 230230, 257140, 282854, 304612, 359996, 380765, 430430, 449995, 460460, 565708, 707135, 761530, 860860, 899990, 989989, 1414270, 1523060, 1799980, 1979978, 2828540, 3959956, 4949945, 9899890, 19799780]

約数ペア:

[(1, 19799780), (2, 9899890), (4, 4949945), (5, 3959956), (7, 2828540), (10, 1979978), (11, 1799980), (13, 1523060), (14, 1414270), (20, 989989), (22, 899990), (23, 860860), (26, 761530), (28, 707135), (35, 565708), (43, 460460), (44, 449995), (46, 430430), (52, 380765), (55, 359996), (65, 304612), (70, 282854), (77, 257140), (86, 230230), (91, 217580), (92, 215215), (110, 179998), (115, 172172), (130, 152306), (140, 141427), (143, 138460), (154, 128570), (161, 122980), (172, 115115), (182, 108790), (215, 92092), (220, 89999), (230, 86086), (253, 78260), (260, 76153), (286, 69230), (299, 66220), (301, 65780), (308, 64285), (322, 61490), (364, 54395), (385, 51428), (430, 46046), (455, 43516), (460, 43043), (473, 41860), (506, 39130), (559, 35420), (572, 34615), (598, 33110), (602, 32890), (644, 30745), (715, 27692), (770, 25714), (805, 24596), (860, 23023), (910, 21758), (946, 20930), (989, 20020), (1001, 19780), (1012, 19565), (1118, 17710), (1196, 16555), (1204, 16445), (1265, 15652), (1430, 13846), (1495, 13244), (1505, 13156), (1540, 12857), (1610, 12298), (1771, 11180), (1820, 10879), (1892, 10465), (1978, 10010), (2002, 9890), (2093, 9460), (2236, 8855), (2365, 8372), (2530, 7826), (2795, 7084), (2860, 6923), (2990, 6622), (3010, 6578), (3220, 6149), (3289, 6020), (3311, 5980), (3542, 5590), (3913, 5060), (3956, 5005), (4004, 4945), (4186, 4730)]