18261720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{457}}^1$

素因数の和:514

約数の個数: 128

約数和(自身を含む): 62654400

約数和(自身を除く): 44392680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 90, 108, 111, 120, 135, 148, 180, 185, 216, 222, 270, 296, 333, 360, 370, 444, 457, 540, 555, 666, 740, 888, 914, 999, 1080, 1110, 1332, 1371, 1480, 1665, 1828, 1998, 2220, 2285, 2664, 2742, 3330, 3656, 3996, 4113, 4440, 4570, 4995, 5484, 6660, 6855, 7992, 8226, 9140, 9990, 10968, 12339, 13320, 13710, 16452, 16909, 18280, 19980, 20565, 24678, 27420, 32904, 33818, 39960, 41130, 49356, 50727, 54840, 61695, 67636, 82260, 84545, 98712, 101454, 123390, 135272, 152181, 164520, 169090, 202908, 246780, 253635, 304362, 338180, 405816, 456543, 493560, 507270, 608724, 676360, 760905, 913086, 1014540, 1217448, 1521810, 1826172, 2029080, 2282715, 3043620, 3652344, 4565430, 6087240, 9130860, 18261720]

約数ペア:

[(1, 18261720), (2, 9130860), (3, 6087240), (4, 4565430), (5, 3652344), (6, 3043620), (8, 2282715), (9, 2029080), (10, 1826172), (12, 1521810), (15, 1217448), (18, 1014540), (20, 913086), (24, 760905), (27, 676360), (30, 608724), (36, 507270), (37, 493560), (40, 456543), (45, 405816), (54, 338180), (60, 304362), (72, 253635), (74, 246780), (90, 202908), (108, 169090), (111, 164520), (120, 152181), (135, 135272), (148, 123390), (180, 101454), (185, 98712), (216, 84545), (222, 82260), (270, 67636), (296, 61695), (333, 54840), (360, 50727), (370, 49356), (444, 41130), (457, 39960), (540, 33818), (555, 32904), (666, 27420), (740, 24678), (888, 20565), (914, 19980), (999, 18280), (1080, 16909), (1110, 16452), (1332, 13710), (1371, 13320), (1480, 12339), (1665, 10968), (1828, 9990), (1998, 9140), (2220, 8226), (2285, 7992), (2664, 6855), (2742, 6660), (3330, 5484), (3656, 4995), (3996, 4570), (4113, 4440)]