1649003860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:686

約数の個数: 144

約数和(自身を含む): 4240252800

約数和(自身を除く): 2591248940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 149, 161, 196, 230, 245, 298, 322, 460, 490, 491, 596, 644, 745, 805, 980, 982, 1043, 1127, 1490, 1610, 1964, 2086, 2254, 2455, 2980, 3220, 3427, 3437, 4172, 4508, 4910, 5215, 5635, 6854, 6874, 7301, 9820, 10430, 11270, 11293, 13708, 13748, 14602, 17135, 17185, 20860, 22540, 22586, 23989, 24059, 29204, 34270, 34370, 36505, 45172, 47978, 48118, 56465, 68540, 68740, 73010, 73159, 79051, 95956, 96236, 112930, 119945, 120295, 146020, 146318, 158102, 167923, 225860, 239890, 240590, 292636, 316204, 335846, 365795, 395255, 479780, 481180, 512113, 553357, 671692, 731590, 790510, 839615, 1024226, 1106714, 1463180, 1581020, 1679230, 1682657, 2048452, 2213428, 2560565, 2766785, 3358460, 3365314, 3584791, 5121130, 5533570, 6730628, 7169582, 8413285, 10242260, 11067140, 11778599, 14339164, 16826570, 17923955, 23557198, 33653140, 35847910, 47114396, 58892995, 71695820, 82450193, 117785990, 164900386, 235571980, 329800772, 412250965, 824501930, 1649003860]

約数ペア:

[(1, 1649003860), (2, 824501930), (4, 412250965), (5, 329800772), (7, 235571980), (10, 164900386), (14, 117785990), (20, 82450193), (23, 71695820), (28, 58892995), (35, 47114396), (46, 35847910), (49, 33653140), (70, 23557198), (92, 17923955), (98, 16826570), (115, 14339164), (140, 11778599), (149, 11067140), (161, 10242260), (196, 8413285), (230, 7169582), (245, 6730628), (298, 5533570), (322, 5121130), (460, 3584791), (490, 3365314), (491, 3358460), (596, 2766785), (644, 2560565), (745, 2213428), (805, 2048452), (980, 1682657), (982, 1679230), (1043, 1581020), (1127, 1463180), (1490, 1106714), (1610, 1024226), (1964, 839615), (2086, 790510), (2254, 731590), (2455, 671692), (2980, 553357), (3220, 512113), (3427, 481180), (3437, 479780), (4172, 395255), (4508, 365795), (4910, 335846), (5215, 316204), (5635, 292636), (6854, 240590), (6874, 239890), (7301, 225860), (9820, 167923), (10430, 158102), (11270, 146318), (11293, 146020), (13708, 120295), (13748, 119945), (14602, 112930), (17135, 96236), (17185, 95956), (20860, 79051), (22540, 73159), (22586, 73010), (23989, 68740), (24059, 68540), (29204, 56465), (34270, 48118), (34370, 47978), (36505, 45172)]