21996568

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1579

約数の個数: 32

約数和(自身を含む): 45274320

約数和(自身を除く): 23277752

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 181, 362, 724, 1381, 1448, 1991, 2762, 3982, 5524, 7964, 11048, 15191, 15928, 30382, 60764, 121528, 249961, 499922, 999844, 1999688, 2749571, 5499142, 10998284, 21996568]

約数ペア:

[(1, 21996568), (2, 10998284), (4, 5499142), (8, 2749571), (11, 1999688), (22, 999844), (44, 499922), (88, 249961), (181, 121528), (362, 60764), (724, 30382), (1381, 15928), (1448, 15191), (1991, 11048), (2762, 7964), (3982, 5524)]