21621760

素因数分解:

$2^{10}\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:169

約数の個数: 88

約数和(自身を含む): 53647776

約数和(自身を除く): 32026016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 103, 128, 160, 164, 205, 206, 256, 320, 328, 410, 412, 512, 515, 640, 656, 820, 824, 1024, 1030, 1280, 1312, 1640, 1648, 2060, 2560, 2624, 3280, 3296, 4120, 4223, 5120, 5248, 6560, 6592, 8240, 8446, 10496, 13120, 13184, 16480, 16892, 20992, 21115, 26240, 26368, 32960, 33784, 41984, 42230, 52480, 52736, 65920, 67568, 84460, 104960, 105472, 131840, 135136, 168920, 209920, 263680, 270272, 337840, 527360, 540544, 675680, 1081088, 1351360, 2162176, 2702720, 4324352, 5405440, 10810880, 21621760]

約数ペア:

[(1, 21621760), (2, 10810880), (4, 5405440), (5, 4324352), (8, 2702720), (10, 2162176), (16, 1351360), (20, 1081088), (32, 675680), (40, 540544), (41, 527360), (64, 337840), (80, 270272), (82, 263680), (103, 209920), (128, 168920), (160, 135136), (164, 131840), (205, 105472), (206, 104960), (256, 84460), (320, 67568), (328, 65920), (410, 52736), (412, 52480), (512, 42230), (515, 41984), (640, 33784), (656, 32960), (820, 26368), (824, 26240), (1024, 21115), (1030, 20992), (1280, 16892), (1312, 16480), (1640, 13184), (1648, 13120), (2060, 10496), (2560, 8446), (2624, 8240), (3280, 6592), (3296, 6560), (4120, 5248), (4223, 5120)]