21311040

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:380

約数の個数: 112

約数和(自身を含む): 68762880

約数和(自身を除く): 47451840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 79, 80, 96, 120, 158, 160, 192, 237, 240, 281, 316, 320, 395, 474, 480, 562, 632, 790, 843, 948, 960, 1124, 1185, 1264, 1405, 1580, 1686, 1896, 2248, 2370, 2528, 2810, 3160, 3372, 3792, 4215, 4496, 4740, 5056, 5620, 6320, 6744, 7584, 8430, 8992, 9480, 11240, 12640, 13488, 15168, 16860, 17984, 18960, 22199, 22480, 25280, 26976, 33720, 37920, 44398, 44960, 53952, 66597, 67440, 75840, 88796, 89920, 110995, 133194, 134880, 177592, 221990, 266388, 269760, 332985, 355184, 443980, 532776, 665970, 710368, 887960, 1065552, 1331940, 1420736, 1775920, 2131104, 2663880, 3551840, 4262208, 5327760, 7103680, 10655520, 21311040]

約数ペア:

[(1, 21311040), (2, 10655520), (3, 7103680), (4, 5327760), (5, 4262208), (6, 3551840), (8, 2663880), (10, 2131104), (12, 1775920), (15, 1420736), (16, 1331940), (20, 1065552), (24, 887960), (30, 710368), (32, 665970), (40, 532776), (48, 443980), (60, 355184), (64, 332985), (79, 269760), (80, 266388), (96, 221990), (120, 177592), (158, 134880), (160, 133194), (192, 110995), (237, 89920), (240, 88796), (281, 75840), (316, 67440), (320, 66597), (395, 53952), (474, 44960), (480, 44398), (562, 37920), (632, 33720), (790, 26976), (843, 25280), (948, 22480), (960, 22199), (1124, 18960), (1185, 17984), (1264, 16860), (1405, 15168), (1580, 13488), (1686, 12640), (1896, 11240), (2248, 9480), (2370, 8992), (2528, 8430), (2810, 7584), (3160, 6744), (3372, 6320), (3792, 5620), (4215, 5056), (4496, 4740)]