19959847180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{3907}}^1$

素因数の和:4344

約数の個数: 144

約数和(自身を含む): 52654172256

約数和(自身を除く): 32694325076

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 401, 455, 490, 637, 802, 910, 980, 1274, 1604, 1820, 2005, 2548, 2807, 3185, 3907, 4010, 5213, 5614, 6370, 7814, 8020, 10426, 11228, 12740, 14035, 15628, 19535, 19649, 20852, 26065, 27349, 28070, 36491, 39070, 39298, 50791, 52130, 54698, 56140, 72982, 78140, 78596, 98245, 101582, 104260, 109396, 136745, 145964, 182455, 191443, 196490, 203164, 253955, 255437, 273490, 355537, 364910, 382886, 392980, 507910, 510874, 546980, 711074, 729820, 765772, 957215, 1015820, 1021748, 1277185, 1422148, 1566707, 1777685, 1914430, 2488759, 2554370, 3133414, 3555370, 3828860, 4977518, 5108740, 6266828, 7110740, 7833535, 9955036, 10966949, 12443795, 15667070, 20367191, 21933898, 24887590, 31334140, 40734382, 43867796, 49775180, 54834745, 76768643, 81468764, 101835955, 109669490, 142570337, 153537286, 203671910, 219338980, 285140674, 307074572, 383843215, 407343820, 570281348, 712851685, 767686430, 997992359, 1425703370, 1535372860, 1995984718, 2851406740, 3991969436, 4989961795, 9979923590, 19959847180]

約数ペア:

[(1, 19959847180), (2, 9979923590), (4, 4989961795), (5, 3991969436), (7, 2851406740), (10, 1995984718), (13, 1535372860), (14, 1425703370), (20, 997992359), (26, 767686430), (28, 712851685), (35, 570281348), (49, 407343820), (52, 383843215), (65, 307074572), (70, 285140674), (91, 219338980), (98, 203671910), (130, 153537286), (140, 142570337), (182, 109669490), (196, 101835955), (245, 81468764), (260, 76768643), (364, 54834745), (401, 49775180), (455, 43867796), (490, 40734382), (637, 31334140), (802, 24887590), (910, 21933898), (980, 20367191), (1274, 15667070), (1604, 12443795), (1820, 10966949), (2005, 9955036), (2548, 7833535), (2807, 7110740), (3185, 6266828), (3907, 5108740), (4010, 4977518), (5213, 3828860), (5614, 3555370), (6370, 3133414), (7814, 2554370), (8020, 2488759), (10426, 1914430), (11228, 1777685), (12740, 1566707), (14035, 1422148), (15628, 1277185), (19535, 1021748), (19649, 1015820), (20852, 957215), (26065, 765772), (27349, 729820), (28070, 711074), (36491, 546980), (39070, 510874), (39298, 507910), (50791, 392980), (52130, 382886), (54698, 364910), (56140, 355537), (72982, 273490), (78140, 255437), (78596, 253955), (98245, 203164), (101582, 196490), (104260, 191443), (109396, 182455), (136745, 145964)]