19907789188

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{20101}}^1$

素因数の和:20313

約数の個数: 72

約数和(自身を含む): 42092623104

約数和(自身を除く): 22184833916

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 163, 196, 217, 326, 434, 652, 868, 1141, 1519, 2282, 3038, 4564, 5053, 6076, 7987, 10106, 15974, 20101, 20212, 31948, 35371, 40202, 70742, 80404, 140707, 141484, 247597, 281414, 495194, 562828, 623131, 984949, 990388, 1246262, 1969898, 2492524, 3276463, 3939796, 4361917, 6552926, 8723834, 13105852, 17447668, 22935241, 30533419, 45870482, 61066838, 91740964, 101570353, 122133676, 160546687, 203140706, 321093374, 406281412, 642186748, 710992471, 1421984942, 2843969884, 4976947297, 9953894594, 19907789188]

約数ペア:

[(1, 19907789188), (2, 9953894594), (4, 4976947297), (7, 2843969884), (14, 1421984942), (28, 710992471), (31, 642186748), (49, 406281412), (62, 321093374), (98, 203140706), (124, 160546687), (163, 122133676), (196, 101570353), (217, 91740964), (326, 61066838), (434, 45870482), (652, 30533419), (868, 22935241), (1141, 17447668), (1519, 13105852), (2282, 8723834), (3038, 6552926), (4564, 4361917), (5053, 3939796), (6076, 3276463), (7987, 2492524), (10106, 1969898), (15974, 1246262), (20101, 990388), (20212, 984949), (31948, 623131), (35371, 562828), (40202, 495194), (70742, 281414), (80404, 247597), (140707, 141484)]