31511520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:377

約数の個数: 144

約数和(自身を含む): 109287360

約数和(自身を除く): 77775840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 79, 80, 90, 96, 120, 144, 158, 160, 180, 237, 240, 277, 288, 316, 360, 395, 474, 480, 554, 632, 711, 720, 790, 831, 948, 1108, 1185, 1264, 1385, 1422, 1440, 1580, 1662, 1896, 2216, 2370, 2493, 2528, 2770, 2844, 3160, 3324, 3555, 3792, 4155, 4432, 4740, 4986, 5540, 5688, 6320, 6648, 7110, 7584, 8310, 8864, 9480, 9972, 11080, 11376, 12465, 12640, 13296, 14220, 16620, 18960, 19944, 21883, 22160, 22752, 24930, 26592, 28440, 33240, 37920, 39888, 43766, 44320, 49860, 56880, 65649, 66480, 79776, 87532, 99720, 109415, 113760, 131298, 132960, 175064, 196947, 199440, 218830, 262596, 328245, 350128, 393894, 398880, 437660, 525192, 656490, 700256, 787788, 875320, 984735, 1050384, 1312980, 1575576, 1750640, 1969470, 2100768, 2625960, 3151152, 3501280, 3938940, 5251920, 6302304, 7877880, 10503840, 15755760, 31511520]

約数ペア:

[(1, 31511520), (2, 15755760), (3, 10503840), (4, 7877880), (5, 6302304), (6, 5251920), (8, 3938940), (9, 3501280), (10, 3151152), (12, 2625960), (15, 2100768), (16, 1969470), (18, 1750640), (20, 1575576), (24, 1312980), (30, 1050384), (32, 984735), (36, 875320), (40, 787788), (45, 700256), (48, 656490), (60, 525192), (72, 437660), (79, 398880), (80, 393894), (90, 350128), (96, 328245), (120, 262596), (144, 218830), (158, 199440), (160, 196947), (180, 175064), (237, 132960), (240, 131298), (277, 113760), (288, 109415), (316, 99720), (360, 87532), (395, 79776), (474, 66480), (480, 65649), (554, 56880), (632, 49860), (711, 44320), (720, 43766), (790, 39888), (831, 37920), (948, 33240), (1108, 28440), (1185, 26592), (1264, 24930), (1385, 22752), (1422, 22160), (1440, 21883), (1580, 19944), (1662, 18960), (1896, 16620), (2216, 14220), (2370, 13296), (2493, 12640), (2528, 12465), (2770, 11376), (2844, 11080), (3160, 9972), (3324, 9480), (3555, 8864), (3792, 8310), (4155, 7584), (4432, 7110), (4740, 6648), (4986, 6320), (5540, 5688)]