21178830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{5153}}^1$

素因数の和:5300

約数の個数: 32

約数和(自身を含む): 51210144

約数和(自身を除く): 30031314

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 137, 274, 411, 685, 822, 1370, 2055, 4110, 5153, 10306, 15459, 25765, 30918, 51530, 77295, 154590, 705961, 1411922, 2117883, 3529805, 4235766, 7059610, 10589415, 21178830]

約数ペア:

[(1, 21178830), (2, 10589415), (3, 7059610), (5, 4235766), (6, 3529805), (10, 2117883), (15, 1411922), (30, 705961), (137, 154590), (274, 77295), (411, 51530), (685, 30918), (822, 25765), (1370, 15459), (2055, 10306), (4110, 5153)]