18861380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{313}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 41779584

約数和(自身を除く): 22918204

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 131, 230, 262, 313, 460, 524, 626, 655, 1252, 1310, 1565, 2620, 3013, 3130, 6026, 6260, 7199, 12052, 14398, 15065, 28796, 30130, 35995, 41003, 60260, 71990, 82006, 143980, 164012, 205015, 410030, 820060, 943069, 1886138, 3772276, 4715345, 9430690, 18861380]

約数ペア:

[(1, 18861380), (2, 9430690), (4, 4715345), (5, 3772276), (10, 1886138), (20, 943069), (23, 820060), (46, 410030), (92, 205015), (115, 164012), (131, 143980), (230, 82006), (262, 71990), (313, 60260), (460, 41003), (524, 35995), (626, 30130), (655, 28796), (1252, 15065), (1310, 14398), (1565, 12052), (2620, 7199), (3013, 6260), (3130, 6026)]