21174747

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 31974144

約数和(自身を除く): 10799397

約数列:

[1, 3, 11, 33, 61, 67, 157, 183, 201, 471, 671, 737, 1727, 2013, 2211, 4087, 5181, 9577, 10519, 12261, 28731, 31557, 44957, 105347, 115709, 134871, 316041, 347127, 641659, 1924977, 7058249, 21174747]

約数ペア:

[(1, 21174747), (3, 7058249), (11, 1924977), (33, 641659), (61, 347127), (67, 316041), (157, 134871), (183, 115709), (201, 105347), (471, 44957), (671, 31557), (737, 28731), (1727, 12261), (2013, 10519), (2211, 9577), (4087, 5181)]