311944360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1993}}^1$

素因数の和:2067

約数の個数: 128

約数和(自身を含む): 884378880

約数和(自身を除く): 572434520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 52, 56, 65, 70, 86, 91, 104, 130, 140, 172, 182, 215, 260, 280, 301, 344, 364, 430, 455, 520, 559, 602, 728, 860, 910, 1118, 1204, 1505, 1720, 1820, 1993, 2236, 2408, 2795, 3010, 3640, 3913, 3986, 4472, 5590, 6020, 7826, 7972, 9965, 11180, 12040, 13951, 15652, 15944, 19565, 19930, 22360, 25909, 27902, 31304, 39130, 39860, 51818, 55804, 69755, 78260, 79720, 85699, 103636, 111608, 129545, 139510, 156520, 171398, 181363, 207272, 259090, 279020, 342796, 362726, 428495, 518180, 558040, 599893, 685592, 725452, 856990, 906815, 1036360, 1114087, 1199786, 1450904, 1713980, 1813630, 2228174, 2399572, 2999465, 3427960, 3627260, 4456348, 4799144, 5570435, 5998930, 7254520, 7798609, 8912696, 11140870, 11997860, 15597218, 22281740, 23995720, 31194436, 38993045, 44563480, 62388872, 77986090, 155972180, 311944360]

約数ペア:

[(1, 311944360), (2, 155972180), (4, 77986090), (5, 62388872), (7, 44563480), (8, 38993045), (10, 31194436), (13, 23995720), (14, 22281740), (20, 15597218), (26, 11997860), (28, 11140870), (35, 8912696), (40, 7798609), (43, 7254520), (52, 5998930), (56, 5570435), (65, 4799144), (70, 4456348), (86, 3627260), (91, 3427960), (104, 2999465), (130, 2399572), (140, 2228174), (172, 1813630), (182, 1713980), (215, 1450904), (260, 1199786), (280, 1114087), (301, 1036360), (344, 906815), (364, 856990), (430, 725452), (455, 685592), (520, 599893), (559, 558040), (602, 518180), (728, 428495), (860, 362726), (910, 342796), (1118, 279020), (1204, 259090), (1505, 207272), (1720, 181363), (1820, 171398), (1993, 156520), (2236, 139510), (2408, 129545), (2795, 111608), (3010, 103636), (3640, 85699), (3913, 79720), (3986, 78260), (4472, 69755), (5590, 55804), (6020, 51818), (7826, 39860), (7972, 39130), (9965, 31304), (11180, 27902), (12040, 25909), (13951, 22360), (15652, 19930), (15944, 19565)]