31221645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 62415360

約数和(自身を除く): 31193715

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 89, 91, 105, 195, 257, 267, 273, 445, 455, 623, 771, 1157, 1285, 1335, 1365, 1799, 1869, 3115, 3341, 3471, 3855, 5397, 5785, 8099, 8995, 9345, 10023, 16705, 17355, 22873, 23387, 24297, 26985, 40495, 50115, 68619, 70161, 114365, 116935, 121485, 160111, 297349, 343095, 350805, 480333, 800555, 892047, 1486745, 2081443, 2401665, 4460235, 6244329, 10407215, 31221645]

約数ペア:

[(1, 31221645), (3, 10407215), (5, 6244329), (7, 4460235), (13, 2401665), (15, 2081443), (21, 1486745), (35, 892047), (39, 800555), (65, 480333), (89, 350805), (91, 343095), (105, 297349), (195, 160111), (257, 121485), (267, 116935), (273, 114365), (445, 70161), (455, 68619), (623, 50115), (771, 40495), (1157, 26985), (1285, 24297), (1335, 23387), (1365, 22873), (1799, 17355), (1869, 16705), (3115, 10023), (3341, 9345), (3471, 8995), (3855, 8099), (5397, 5785)]