20966272

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 45349200

約数和(自身を除く): 24382928

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 64, 74, 76, 128, 148, 152, 233, 296, 304, 466, 592, 608, 703, 932, 1184, 1216, 1406, 1864, 2368, 2432, 2812, 3728, 4427, 4736, 5624, 7456, 8621, 8854, 11248, 14912, 17242, 17708, 22496, 29824, 34484, 35416, 44992, 68968, 70832, 89984, 137936, 141664, 163799, 275872, 283328, 327598, 551744, 566656, 655196, 1103488, 1310392, 2620784, 5241568, 10483136, 20966272]

約数ペア:

[(1, 20966272), (2, 10483136), (4, 5241568), (8, 2620784), (16, 1310392), (19, 1103488), (32, 655196), (37, 566656), (38, 551744), (64, 327598), (74, 283328), (76, 275872), (128, 163799), (148, 141664), (152, 137936), (233, 89984), (296, 70832), (304, 68968), (466, 44992), (592, 35416), (608, 34484), (703, 29824), (932, 22496), (1184, 17708), (1216, 17242), (1406, 14912), (1864, 11248), (2368, 8854), (2432, 8621), (2812, 7456), (3728, 5624), (4427, 4736)]