1991036889

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:240

約数の個数: 96

約数和(自身を含む): 3289075200

約数和(自身を除く): 1298038311

約数列:

[1, 3, 9, 17, 27, 47, 51, 61, 89, 141, 153, 183, 267, 289, 423, 459, 549, 799, 801, 867, 1037, 1269, 1513, 1647, 2397, 2403, 2601, 2867, 3111, 4183, 4539, 5429, 7191, 7803, 8601, 9333, 12549, 13583, 13617, 16287, 17629, 21573, 25721, 25803, 27999, 37647, 40749, 40851, 48739, 48861, 52887, 71111, 77163, 77409, 92293, 112941, 122247, 146217, 146583, 158661, 213333, 231489, 255163, 276879, 366741, 438651, 475983, 639999, 694467, 765489, 828563, 830637, 1208887, 1315953, 1568981, 1919997, 2296467, 2485689, 2491911, 3626661, 4337771, 4706943, 6889401, 7457067, 10879983, 13013313, 14120829, 22371201, 32639949, 39039939, 42362487, 73742107, 117119817, 221226321, 663678963, 1991036889]

約数ペア:

[(1, 1991036889), (3, 663678963), (9, 221226321), (17, 117119817), (27, 73742107), (47, 42362487), (51, 39039939), (61, 32639949), (89, 22371201), (141, 14120829), (153, 13013313), (183, 10879983), (267, 7457067), (289, 6889401), (423, 4706943), (459, 4337771), (549, 3626661), (799, 2491911), (801, 2485689), (867, 2296467), (1037, 1919997), (1269, 1568981), (1513, 1315953), (1647, 1208887), (2397, 830637), (2403, 828563), (2601, 765489), (2867, 694467), (3111, 639999), (4183, 475983), (4539, 438651), (5429, 366741), (7191, 276879), (7803, 255163), (8601, 231489), (9333, 213333), (12549, 158661), (13583, 146583), (13617, 146217), (16287, 122247), (17629, 112941), (21573, 92293), (25721, 77409), (25803, 77163), (27999, 71111), (37647, 52887), (40749, 48861), (40851, 48739)]