20421856

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7013}}^1$

素因数の和:7043

約数の個数: 48

約数和(自身を含む): 49490784

約数和(自身を除く): 29068928

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7013, 14026, 28052, 49091, 56104, 91169, 98182, 112208, 182338, 196364, 224416, 364676, 392728, 638183, 729352, 785456, 1276366, 1458704, 1570912, 2552732, 2917408, 5105464, 10210928, 20421856]

約数ペア:

[(1, 20421856), (2, 10210928), (4, 5105464), (7, 2917408), (8, 2552732), (13, 1570912), (14, 1458704), (16, 1276366), (26, 785456), (28, 729352), (32, 638183), (52, 392728), (56, 364676), (91, 224416), (104, 196364), (112, 182338), (182, 112208), (208, 98182), (224, 91169), (364, 56104), (416, 49091), (728, 28052), (1456, 14026), (2912, 7013)]