19984158

素因数分解:

$2^1\times 3^4\times {\mathrm{281}}^1\times {\mathrm{439}}^1$

素因数の和:734

約数の個数: 40

約数和(自身を含む): 45041040

約数和(自身を除く): 25056882

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 281, 439, 562, 843, 878, 1317, 1686, 2529, 2634, 3951, 5058, 7587, 7902, 11853, 15174, 22761, 23706, 35559, 45522, 71118, 123359, 246718, 370077, 740154, 1110231, 2220462, 3330693, 6661386, 9992079, 19984158]

約数ペア:

[(1, 19984158), (2, 9992079), (3, 6661386), (6, 3330693), (9, 2220462), (18, 1110231), (27, 740154), (54, 370077), (81, 246718), (162, 123359), (281, 71118), (439, 45522), (562, 35559), (843, 23706), (878, 22761), (1317, 15174), (1686, 11853), (2529, 7902), (2634, 7587), (3951, 5058)]