21969015

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{853}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 37630656

約数和(自身を除く): 15661641

約数列:

[1, 3, 5, 15, 17, 51, 85, 101, 255, 303, 505, 853, 1515, 1717, 2559, 4265, 5151, 8585, 12795, 14501, 25755, 43503, 72505, 86153, 217515, 258459, 430765, 1292295, 1464601, 4393803, 7323005, 21969015]

約数ペア:

[(1, 21969015), (3, 7323005), (5, 4393803), (15, 1464601), (17, 1292295), (51, 430765), (85, 258459), (101, 217515), (255, 86153), (303, 72505), (505, 43503), (853, 25755), (1515, 14501), (1717, 12795), (2559, 8585), (4265, 5151)]