21295808

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:325

約数の個数: 56

約数和(自身を含む): 45232320

約数和(自身を除く): 23936512

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 83, 152, 166, 211, 304, 332, 422, 608, 664, 844, 1216, 1328, 1577, 1688, 2656, 3154, 3376, 4009, 5312, 6308, 6752, 8018, 12616, 13504, 16036, 17513, 25232, 32072, 35026, 50464, 64144, 70052, 100928, 128288, 140104, 256576, 280208, 332747, 560416, 665494, 1120832, 1330988, 2661976, 5323952, 10647904, 21295808]

約数ペア:

[(1, 21295808), (2, 10647904), (4, 5323952), (8, 2661976), (16, 1330988), (19, 1120832), (32, 665494), (38, 560416), (64, 332747), (76, 280208), (83, 256576), (152, 140104), (166, 128288), (211, 100928), (304, 70052), (332, 64144), (422, 50464), (608, 35026), (664, 32072), (844, 25232), (1216, 17513), (1328, 16036), (1577, 13504), (1688, 12616), (2656, 8018), (3154, 6752), (3376, 6308), (4009, 5312)]