646497740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:679

約数の個数: 96

約数和(自身を含む): 1588392960

約数和(自身を除く): 941895220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 157, 268, 314, 335, 439, 469, 628, 670, 785, 878, 938, 1099, 1340, 1570, 1756, 1876, 2195, 2198, 2345, 3073, 3140, 4390, 4396, 4690, 5495, 6146, 8780, 9380, 10519, 10990, 12292, 15365, 21038, 21980, 29413, 30730, 42076, 52595, 58826, 61460, 68923, 73633, 105190, 117652, 137846, 147065, 147266, 205891, 210380, 275692, 294130, 294532, 344615, 368165, 411782, 482461, 588260, 689230, 736330, 823564, 964922, 1029455, 1378460, 1472660, 1929844, 2058910, 2412305, 4117820, 4617841, 4824610, 9235682, 9649220, 18471364, 23089205, 32324887, 46178410, 64649774, 92356820, 129299548, 161624435, 323248870, 646497740]

約数ペア:

[(1, 646497740), (2, 323248870), (4, 161624435), (5, 129299548), (7, 92356820), (10, 64649774), (14, 46178410), (20, 32324887), (28, 23089205), (35, 18471364), (67, 9649220), (70, 9235682), (134, 4824610), (140, 4617841), (157, 4117820), (268, 2412305), (314, 2058910), (335, 1929844), (439, 1472660), (469, 1378460), (628, 1029455), (670, 964922), (785, 823564), (878, 736330), (938, 689230), (1099, 588260), (1340, 482461), (1570, 411782), (1756, 368165), (1876, 344615), (2195, 294532), (2198, 294130), (2345, 275692), (3073, 210380), (3140, 205891), (4390, 147266), (4396, 147065), (4690, 137846), (5495, 117652), (6146, 105190), (8780, 73633), (9380, 68923), (10519, 61460), (10990, 58826), (12292, 52595), (15365, 42076), (21038, 30730), (21980, 29413)]