1818729640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{8191}}^1$

素因数の和:8283

約数の個数: 128

約数和(自身を含む): 5119672320

約数和(自身を除く): 3300942680

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 61, 65, 70, 91, 104, 122, 130, 140, 182, 244, 260, 280, 305, 364, 427, 455, 488, 520, 610, 728, 793, 854, 910, 1220, 1586, 1708, 1820, 2135, 2440, 3172, 3416, 3640, 3965, 4270, 5551, 6344, 7930, 8191, 8540, 11102, 15860, 16382, 17080, 22204, 27755, 31720, 32764, 40955, 44408, 55510, 57337, 65528, 81910, 106483, 111020, 114674, 163820, 212966, 222040, 229348, 286685, 327640, 425932, 458696, 499651, 532415, 573370, 745381, 851864, 999302, 1064830, 1146740, 1490762, 1998604, 2129660, 2293480, 2498255, 2981524, 3497557, 3726905, 3997208, 4259320, 4996510, 5963048, 6495463, 6995114, 7453810, 9993020, 12990926, 13990228, 14907620, 17487785, 19986040, 25981852, 27980456, 29815240, 32477315, 34975570, 45468241, 51963704, 64954630, 69951140, 90936482, 129909260, 139902280, 181872964, 227341205, 259818520, 363745928, 454682410, 909364820, 1818729640]

約数ペア:

[(1, 1818729640), (2, 909364820), (4, 454682410), (5, 363745928), (7, 259818520), (8, 227341205), (10, 181872964), (13, 139902280), (14, 129909260), (20, 90936482), (26, 69951140), (28, 64954630), (35, 51963704), (40, 45468241), (52, 34975570), (56, 32477315), (61, 29815240), (65, 27980456), (70, 25981852), (91, 19986040), (104, 17487785), (122, 14907620), (130, 13990228), (140, 12990926), (182, 9993020), (244, 7453810), (260, 6995114), (280, 6495463), (305, 5963048), (364, 4996510), (427, 4259320), (455, 3997208), (488, 3726905), (520, 3497557), (610, 2981524), (728, 2498255), (793, 2293480), (854, 2129660), (910, 1998604), (1220, 1490762), (1586, 1146740), (1708, 1064830), (1820, 999302), (2135, 851864), (2440, 745381), (3172, 573370), (3416, 532415), (3640, 499651), (3965, 458696), (4270, 425932), (5551, 327640), (6344, 286685), (7930, 229348), (8191, 222040), (8540, 212966), (11102, 163820), (15860, 114674), (16382, 111020), (17080, 106483), (22204, 81910), (27755, 65528), (31720, 57337), (32764, 55510), (40955, 44408)]