21090438

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 48803040

約数和(自身を除く): 27712602

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 157, 306, 314, 439, 471, 878, 942, 1317, 1413, 2634, 2669, 2826, 3951, 5338, 7463, 7902, 8007, 14926, 16014, 22389, 24021, 44778, 48042, 67167, 68923, 134334, 137846, 206769, 413538, 620307, 1171691, 1240614, 2343382, 3515073, 7030146, 10545219, 21090438]

約数ペア:

[(1, 21090438), (2, 10545219), (3, 7030146), (6, 3515073), (9, 2343382), (17, 1240614), (18, 1171691), (34, 620307), (51, 413538), (102, 206769), (153, 137846), (157, 134334), (306, 68923), (314, 67167), (439, 48042), (471, 44778), (878, 24021), (942, 22389), (1317, 16014), (1413, 14926), (2634, 8007), (2669, 7902), (2826, 7463), (3951, 5338)]