19985576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6199}}^1$

素因数の和:6249

約数の個数: 32

約数和(自身を含む): 41664000

約数和(自身を除く): 21678424

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6199, 12398, 24796, 49592, 80587, 161174, 192169, 322348, 384338, 644696, 768676, 1537352, 2498197, 4996394, 9992788, 19985576]

約数ペア:

[(1, 19985576), (2, 9992788), (4, 4996394), (8, 2498197), (13, 1537352), (26, 768676), (31, 644696), (52, 384338), (62, 322348), (104, 192169), (124, 161174), (248, 80587), (403, 49592), (806, 24796), (1612, 12398), (3224, 6199)]