21419520

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2789}}^1$

素因数の和:2815

約数の個数: 80

約数和(自身を含む): 68500080

約数和(自身を除く): 47080560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2789, 3840, 5578, 7680, 8367, 11156, 13945, 16734, 22312, 27890, 33468, 41835, 44624, 55780, 66936, 83670, 89248, 111560, 133872, 167340, 178496, 223120, 267744, 334680, 356992, 446240, 535488, 669360, 713984, 892480, 1070976, 1338720, 1427968, 1784960, 2141952, 2677440, 3569920, 4283904, 5354880, 7139840, 10709760, 21419520]

約数ペア:

[(1, 21419520), (2, 10709760), (3, 7139840), (4, 5354880), (5, 4283904), (6, 3569920), (8, 2677440), (10, 2141952), (12, 1784960), (15, 1427968), (16, 1338720), (20, 1070976), (24, 892480), (30, 713984), (32, 669360), (40, 535488), (48, 446240), (60, 356992), (64, 334680), (80, 267744), (96, 223120), (120, 178496), (128, 167340), (160, 133872), (192, 111560), (240, 89248), (256, 83670), (320, 66936), (384, 55780), (480, 44624), (512, 41835), (640, 33468), (768, 27890), (960, 22312), (1280, 16734), (1536, 13945), (1920, 11156), (2560, 8367), (2789, 7680), (3840, 5578)]