21303776

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{617}}^1$

素因数の和:723

約数の個数: 48

約数和(自身を含む): 45786384

約数和(自身を除く): 24482608

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 83, 104, 166, 208, 332, 416, 617, 664, 1079, 1234, 1328, 2158, 2468, 2656, 4316, 4936, 8021, 8632, 9872, 16042, 17264, 19744, 32084, 34528, 51211, 64168, 102422, 128336, 204844, 256672, 409688, 665743, 819376, 1331486, 1638752, 2662972, 5325944, 10651888, 21303776]

約数ペア:

[(1, 21303776), (2, 10651888), (4, 5325944), (8, 2662972), (13, 1638752), (16, 1331486), (26, 819376), (32, 665743), (52, 409688), (83, 256672), (104, 204844), (166, 128336), (208, 102422), (332, 64168), (416, 51211), (617, 34528), (664, 32084), (1079, 19744), (1234, 17264), (1328, 16042), (2158, 9872), (2468, 8632), (2656, 8021), (4316, 4936)]