1918874828

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:188

約数の個数: 144

約数和(自身を含む): 4110543360

約数和(自身を除く): 2191668532

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 43, 47, 52, 62, 76, 86, 94, 124, 172, 188, 247, 403, 494, 559, 589, 611, 806, 817, 893, 961, 988, 1118, 1178, 1222, 1333, 1457, 1612, 1634, 1786, 1922, 2021, 2236, 2356, 2444, 2666, 2914, 3268, 3572, 3844, 4042, 5332, 5828, 7657, 8084, 10621, 11609, 12493, 15314, 17329, 18259, 18941, 21242, 23218, 24986, 25327, 26273, 27683, 30628, 34658, 36518, 37882, 38399, 41323, 42484, 45167, 46436, 49972, 50654, 52546, 55366, 62651, 69316, 73036, 75764, 76798, 82646, 90334, 101308, 105092, 110732, 125302, 153596, 165292, 180668, 237367, 250604, 329251, 359879, 474734, 499187, 537199, 587171, 658502, 719758, 785137, 814463, 858173, 949468, 998374, 1074398, 1174342, 1190369, 1317004, 1439516, 1570274, 1628926, 1716346, 1942181, 1996748, 2148796, 2348684, 2380738, 3140548, 3257852, 3432692, 3884362, 4761476, 7768724, 10206781, 11156249, 15474797, 20413562, 22312498, 25248353, 30949594, 36901439, 40827124, 44624996, 50496706, 61899188, 73802878, 100993412, 147605756, 479718707, 959437414, 1918874828]

約数ペア:

[(1, 1918874828), (2, 959437414), (4, 479718707), (13, 147605756), (19, 100993412), (26, 73802878), (31, 61899188), (38, 50496706), (43, 44624996), (47, 40827124), (52, 36901439), (62, 30949594), (76, 25248353), (86, 22312498), (94, 20413562), (124, 15474797), (172, 11156249), (188, 10206781), (247, 7768724), (403, 4761476), (494, 3884362), (559, 3432692), (589, 3257852), (611, 3140548), (806, 2380738), (817, 2348684), (893, 2148796), (961, 1996748), (988, 1942181), (1118, 1716346), (1178, 1628926), (1222, 1570274), (1333, 1439516), (1457, 1317004), (1612, 1190369), (1634, 1174342), (1786, 1074398), (1922, 998374), (2021, 949468), (2236, 858173), (2356, 814463), (2444, 785137), (2666, 719758), (2914, 658502), (3268, 587171), (3572, 537199), (3844, 499187), (4042, 474734), (5332, 359879), (5828, 329251), (7657, 250604), (8084, 237367), (10621, 180668), (11609, 165292), (12493, 153596), (15314, 125302), (17329, 110732), (18259, 105092), (18941, 101308), (21242, 90334), (23218, 82646), (24986, 76798), (25327, 75764), (26273, 73036), (27683, 69316), (30628, 62651), (34658, 55366), (36518, 52546), (37882, 50654), (38399, 49972), (41323, 46436), (42484, 45167)]