21441440

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4621}}^1$

素因数の和:4665

約数の個数: 48

約数和(自身を含む): 52413480

約数和(自身を除く): 30972040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4621, 4640, 9242, 18484, 23105, 36968, 46210, 73936, 92420, 134009, 147872, 184840, 268018, 369680, 536036, 670045, 739360, 1072072, 1340090, 2144144, 2680180, 4288288, 5360360, 10720720, 21441440]

約数ペア:

[(1, 21441440), (2, 10720720), (4, 5360360), (5, 4288288), (8, 2680180), (10, 2144144), (16, 1340090), (20, 1072072), (29, 739360), (32, 670045), (40, 536036), (58, 369680), (80, 268018), (116, 184840), (145, 147872), (160, 134009), (232, 92420), (290, 73936), (464, 46210), (580, 36968), (928, 23105), (1160, 18484), (2320, 9242), (4621, 4640)]