21874784

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:615

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 24392416

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 79, 136, 158, 272, 316, 509, 544, 632, 1018, 1264, 1343, 2036, 2528, 2686, 4072, 5372, 8144, 8653, 10744, 16288, 17306, 21488, 34612, 40211, 42976, 69224, 80422, 138448, 160844, 276896, 321688, 643376, 683587, 1286752, 1367174, 2734348, 5468696, 10937392, 21874784]

約数ペア:

[(1, 21874784), (2, 10937392), (4, 5468696), (8, 2734348), (16, 1367174), (17, 1286752), (32, 683587), (34, 643376), (68, 321688), (79, 276896), (136, 160844), (158, 138448), (272, 80422), (316, 69224), (509, 42976), (544, 40211), (632, 34612), (1018, 21488), (1264, 17306), (1343, 16288), (2036, 10744), (2528, 8653), (2686, 8144), (4072, 5372)]