20814430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 46811520

約数和(自身を除く): 25997090

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 89, 91, 130, 178, 182, 257, 445, 455, 514, 623, 890, 910, 1157, 1246, 1285, 1799, 2314, 2570, 3115, 3341, 3598, 5785, 6230, 6682, 8099, 8995, 11570, 16198, 16705, 17990, 22873, 23387, 33410, 40495, 45746, 46774, 80990, 114365, 116935, 160111, 228730, 233870, 297349, 320222, 594698, 800555, 1486745, 1601110, 2081443, 2973490, 4162886, 10407215, 20814430]

約数ペア:

[(1, 20814430), (2, 10407215), (5, 4162886), (7, 2973490), (10, 2081443), (13, 1601110), (14, 1486745), (26, 800555), (35, 594698), (65, 320222), (70, 297349), (89, 233870), (91, 228730), (130, 160111), (178, 116935), (182, 114365), (257, 80990), (445, 46774), (455, 45746), (514, 40495), (623, 33410), (890, 23387), (910, 22873), (1157, 17990), (1246, 16705), (1285, 16198), (1799, 11570), (2314, 8995), (2570, 8099), (3115, 6682), (3341, 6230), (3598, 5785)]