218421760

素因数分解:

$2^9\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2081}}^1$

素因数の和:2145

約数の個数: 80

約数和(自身を含む): 536731272

約数和(自身を除く): 318309512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 205, 256, 320, 328, 410, 512, 640, 656, 820, 1280, 1312, 1640, 2081, 2560, 2624, 3280, 4162, 5248, 6560, 8324, 10405, 10496, 13120, 16648, 20810, 20992, 26240, 33296, 41620, 52480, 66592, 83240, 85321, 104960, 133184, 166480, 170642, 266368, 332960, 341284, 426605, 532736, 665920, 682568, 853210, 1065472, 1331840, 1365136, 1706420, 2663680, 2730272, 3412840, 5327360, 5460544, 6825680, 10921088, 13651360, 21842176, 27302720, 43684352, 54605440, 109210880, 218421760]

約数ペア:

[(1, 218421760), (2, 109210880), (4, 54605440), (5, 43684352), (8, 27302720), (10, 21842176), (16, 13651360), (20, 10921088), (32, 6825680), (40, 5460544), (41, 5327360), (64, 3412840), (80, 2730272), (82, 2663680), (128, 1706420), (160, 1365136), (164, 1331840), (205, 1065472), (256, 853210), (320, 682568), (328, 665920), (410, 532736), (512, 426605), (640, 341284), (656, 332960), (820, 266368), (1280, 170642), (1312, 166480), (1640, 133184), (2081, 104960), (2560, 85321), (2624, 83240), (3280, 66592), (4162, 52480), (5248, 41620), (6560, 33296), (8324, 26240), (10405, 20992), (10496, 20810), (13120, 16648)]