20959120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2879}}^1$

素因数の和:2912

約数の個数: 80

約数和(自身を含む): 59996160

約数和(自身を除く): 39037040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2879, 3640, 5758, 7280, 11516, 14395, 20153, 23032, 28790, 37427, 40306, 46064, 57580, 74854, 80612, 100765, 115160, 149708, 161224, 187135, 201530, 230320, 261989, 299416, 322448, 374270, 403060, 523978, 598832, 748540, 806120, 1047956, 1309945, 1497080, 1612240, 2095912, 2619890, 2994160, 4191824, 5239780, 10479560, 20959120]

約数ペア:

[(1, 20959120), (2, 10479560), (4, 5239780), (5, 4191824), (7, 2994160), (8, 2619890), (10, 2095912), (13, 1612240), (14, 1497080), (16, 1309945), (20, 1047956), (26, 806120), (28, 748540), (35, 598832), (40, 523978), (52, 403060), (56, 374270), (65, 322448), (70, 299416), (80, 261989), (91, 230320), (104, 201530), (112, 187135), (130, 161224), (140, 149708), (182, 115160), (208, 100765), (260, 80612), (280, 74854), (364, 57580), (455, 46064), (520, 40306), (560, 37427), (728, 28790), (910, 23032), (1040, 20153), (1456, 14395), (1820, 11516), (2879, 7280), (3640, 5758)]