20458912

素因数分解:

$2^5\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:341

約数の個数: 48

約数和(自身を含む): 41997312

約数和(自身を除く): 21538400

約数列:

[1, 2, 4, 8, 16, 32, 47, 61, 94, 122, 188, 223, 244, 376, 446, 488, 752, 892, 976, 1504, 1784, 1952, 2867, 3568, 5734, 7136, 10481, 11468, 13603, 20962, 22936, 27206, 41924, 45872, 54412, 83848, 91744, 108824, 167696, 217648, 335392, 435296, 639341, 1278682, 2557364, 5114728, 10229456, 20458912]

約数ペア:

[(1, 20458912), (2, 10229456), (4, 5114728), (8, 2557364), (16, 1278682), (32, 639341), (47, 435296), (61, 335392), (94, 217648), (122, 167696), (188, 108824), (223, 91744), (244, 83848), (376, 54412), (446, 45872), (488, 41924), (752, 27206), (892, 22936), (976, 20962), (1504, 13603), (1784, 11468), (1952, 10481), (2867, 7136), (3568, 5734)]