21803379

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 11312781

約数列:

[1, 3, 13, 23, 39, 69, 109, 223, 299, 327, 669, 897, 1417, 2507, 2899, 4251, 5129, 7521, 8697, 15387, 24307, 32591, 66677, 72921, 97773, 200031, 315991, 559061, 947973, 1677183, 7267793, 21803379]

約数ペア:

[(1, 21803379), (3, 7267793), (13, 1677183), (23, 947973), (39, 559061), (69, 315991), (109, 200031), (223, 97773), (299, 72921), (327, 66677), (669, 32591), (897, 24307), (1417, 15387), (2507, 8697), (2899, 7521), (4251, 5129)]