21661120

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 112

約数和(自身を含む): 57351168

約数和(自身を除く): 35690048

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 41, 52, 64, 65, 80, 82, 104, 127, 130, 160, 164, 205, 208, 254, 260, 320, 328, 410, 416, 508, 520, 533, 635, 656, 820, 832, 1016, 1040, 1066, 1270, 1312, 1640, 1651, 2032, 2080, 2132, 2540, 2624, 2665, 3280, 3302, 4064, 4160, 4264, 5080, 5207, 5330, 6560, 6604, 8128, 8255, 8528, 10160, 10414, 10660, 13120, 13208, 16510, 17056, 20320, 20828, 21320, 26035, 26416, 33020, 34112, 40640, 41656, 42640, 52070, 52832, 66040, 67691, 83312, 85280, 104140, 105664, 132080, 135382, 166624, 170560, 208280, 264160, 270764, 333248, 338455, 416560, 528320, 541528, 676910, 833120, 1083056, 1353820, 1666240, 2166112, 2707640, 4332224, 5415280, 10830560, 21661120]

約数ペア:

[(1, 21661120), (2, 10830560), (4, 5415280), (5, 4332224), (8, 2707640), (10, 2166112), (13, 1666240), (16, 1353820), (20, 1083056), (26, 833120), (32, 676910), (40, 541528), (41, 528320), (52, 416560), (64, 338455), (65, 333248), (80, 270764), (82, 264160), (104, 208280), (127, 170560), (130, 166624), (160, 135382), (164, 132080), (205, 105664), (208, 104140), (254, 85280), (260, 83312), (320, 67691), (328, 66040), (410, 52832), (416, 52070), (508, 42640), (520, 41656), (533, 40640), (635, 34112), (656, 33020), (820, 26416), (832, 26035), (1016, 21320), (1040, 20828), (1066, 20320), (1270, 17056), (1312, 16510), (1640, 13208), (1651, 13120), (2032, 10660), (2080, 10414), (2132, 10160), (2540, 8528), (2624, 8255), (2665, 8128), (3280, 6604), (3302, 6560), (4064, 5330), (4160, 5207), (4264, 5080)]