20539440

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:316

約数の個数: 160

約数和(自身を含む): 72941760

約数和(自身を除く): 52402320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 37, 40, 45, 48, 54, 60, 72, 74, 80, 90, 108, 111, 120, 135, 144, 148, 180, 185, 216, 222, 240, 257, 270, 296, 333, 360, 370, 432, 444, 514, 540, 555, 592, 666, 720, 740, 771, 888, 999, 1028, 1080, 1110, 1285, 1332, 1480, 1542, 1665, 1776, 1998, 2056, 2160, 2220, 2313, 2570, 2664, 2960, 3084, 3330, 3855, 3996, 4112, 4440, 4626, 4995, 5140, 5328, 6168, 6660, 6939, 7710, 7992, 8880, 9252, 9509, 9990, 10280, 11565, 12336, 13320, 13878, 15420, 15984, 18504, 19018, 19980, 20560, 23130, 26640, 27756, 28527, 30840, 34695, 37008, 38036, 39960, 46260, 47545, 55512, 57054, 61680, 69390, 76072, 79920, 85581, 92520, 95090, 111024, 114108, 138780, 142635, 152144, 171162, 185040, 190180, 228216, 256743, 277560, 285270, 342324, 380360, 427905, 456432, 513486, 555120, 570540, 684648, 760720, 855810, 1026972, 1141080, 1283715, 1369296, 1711620, 2053944, 2282160, 2567430, 3423240, 4107888, 5134860, 6846480, 10269720, 20539440]

約数ペア:

[(1, 20539440), (2, 10269720), (3, 6846480), (4, 5134860), (5, 4107888), (6, 3423240), (8, 2567430), (9, 2282160), (10, 2053944), (12, 1711620), (15, 1369296), (16, 1283715), (18, 1141080), (20, 1026972), (24, 855810), (27, 760720), (30, 684648), (36, 570540), (37, 555120), (40, 513486), (45, 456432), (48, 427905), (54, 380360), (60, 342324), (72, 285270), (74, 277560), (80, 256743), (90, 228216), (108, 190180), (111, 185040), (120, 171162), (135, 152144), (144, 142635), (148, 138780), (180, 114108), (185, 111024), (216, 95090), (222, 92520), (240, 85581), (257, 79920), (270, 76072), (296, 69390), (333, 61680), (360, 57054), (370, 55512), (432, 47545), (444, 46260), (514, 39960), (540, 38036), (555, 37008), (592, 34695), (666, 30840), (720, 28527), (740, 27756), (771, 26640), (888, 23130), (999, 20560), (1028, 19980), (1080, 19018), (1110, 18504), (1285, 15984), (1332, 15420), (1480, 13878), (1542, 13320), (1665, 12336), (1776, 11565), (1998, 10280), (2056, 9990), (2160, 9509), (2220, 9252), (2313, 8880), (2570, 7992), (2664, 7710), (2960, 6939), (3084, 6660), (3330, 6168), (3855, 5328), (3996, 5140), (4112, 4995), (4440, 4626)]