20377448

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1217}}^1$

素因数の和:1266

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 28732312

約数列:

[1, 2, 4, 7, 8, 13, 14, 23, 26, 28, 46, 52, 56, 91, 92, 104, 161, 182, 184, 299, 322, 364, 598, 644, 728, 1196, 1217, 1288, 2093, 2392, 2434, 4186, 4868, 8372, 8519, 9736, 15821, 16744, 17038, 27991, 31642, 34076, 55982, 63284, 68152, 110747, 111964, 126568, 195937, 221494, 223928, 363883, 391874, 442988, 727766, 783748, 885976, 1455532, 1567496, 2547181, 2911064, 5094362, 10188724, 20377448]

約数ペア:

[(1, 20377448), (2, 10188724), (4, 5094362), (7, 2911064), (8, 2547181), (13, 1567496), (14, 1455532), (23, 885976), (26, 783748), (28, 727766), (46, 442988), (52, 391874), (56, 363883), (91, 223928), (92, 221494), (104, 195937), (161, 126568), (182, 111964), (184, 110747), (299, 68152), (322, 63284), (364, 55982), (598, 34076), (644, 31642), (728, 27991), (1196, 17038), (1217, 16744), (1288, 15821), (2093, 9736), (2392, 8519), (2434, 8372), (4186, 4868)]