19986784

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{463}}^1$

素因数の和:563

約数の個数: 48

約数和(自身を含む): 42094080

約数和(自身を除く): 22107296

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 71, 76, 142, 152, 284, 304, 463, 568, 608, 926, 1136, 1349, 1852, 2272, 2698, 3704, 5396, 7408, 8797, 10792, 14816, 17594, 21584, 32873, 35188, 43168, 65746, 70376, 131492, 140752, 262984, 281504, 525968, 624587, 1051936, 1249174, 2498348, 4996696, 9993392, 19986784]

約数ペア:

[(1, 19986784), (2, 9993392), (4, 4996696), (8, 2498348), (16, 1249174), (19, 1051936), (32, 624587), (38, 525968), (71, 281504), (76, 262984), (142, 140752), (152, 131492), (284, 70376), (304, 65746), (463, 43168), (568, 35188), (608, 32873), (926, 21584), (1136, 17594), (1349, 14816), (1852, 10792), (2272, 8797), (2698, 7408), (3704, 5396)]