21354240

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:174

約数の個数: 144

約数和(自身を含む): 70051968

約数和(自身を除く): 48697728

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 67, 80, 83, 96, 120, 128, 134, 160, 166, 192, 201, 240, 249, 256, 268, 320, 332, 335, 384, 402, 415, 480, 498, 536, 640, 664, 670, 768, 804, 830, 960, 996, 1005, 1072, 1245, 1280, 1328, 1340, 1608, 1660, 1920, 1992, 2010, 2144, 2490, 2656, 2680, 3216, 3320, 3840, 3984, 4020, 4288, 4980, 5312, 5360, 5561, 6432, 6640, 7968, 8040, 8576, 9960, 10624, 10720, 11122, 12864, 13280, 15936, 16080, 16683, 17152, 19920, 21248, 21440, 22244, 25728, 26560, 27805, 31872, 32160, 33366, 39840, 42880, 44488, 51456, 53120, 55610, 63744, 64320, 66732, 79680, 83415, 85760, 88976, 106240, 111220, 128640, 133464, 159360, 166830, 177952, 222440, 257280, 266928, 318720, 333660, 355904, 444880, 533856, 667320, 711808, 889760, 1067712, 1334640, 1423616, 1779520, 2135424, 2669280, 3559040, 4270848, 5338560, 7118080, 10677120, 21354240]

約数ペア:

[(1, 21354240), (2, 10677120), (3, 7118080), (4, 5338560), (5, 4270848), (6, 3559040), (8, 2669280), (10, 2135424), (12, 1779520), (15, 1423616), (16, 1334640), (20, 1067712), (24, 889760), (30, 711808), (32, 667320), (40, 533856), (48, 444880), (60, 355904), (64, 333660), (67, 318720), (80, 266928), (83, 257280), (96, 222440), (120, 177952), (128, 166830), (134, 159360), (160, 133464), (166, 128640), (192, 111220), (201, 106240), (240, 88976), (249, 85760), (256, 83415), (268, 79680), (320, 66732), (332, 64320), (335, 63744), (384, 55610), (402, 53120), (415, 51456), (480, 44488), (498, 42880), (536, 39840), (640, 33366), (664, 32160), (670, 31872), (768, 27805), (804, 26560), (830, 25728), (960, 22244), (996, 21440), (1005, 21248), (1072, 19920), (1245, 17152), (1280, 16683), (1328, 16080), (1340, 15936), (1608, 13280), (1660, 12864), (1920, 11122), (1992, 10720), (2010, 10624), (2144, 9960), (2490, 8576), (2656, 8040), (2680, 7968), (3216, 6640), (3320, 6432), (3840, 5561), (3984, 5360), (4020, 5312), (4288, 4980)]