20997423460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1\times {\mathrm{3851}}^1$

素因数の和:4253

約数の個数: 96

約数和(自身を含む): 48361767552

約数和(自身を除く): 27364344092

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 130, 134, 260, 268, 313, 335, 626, 670, 871, 1252, 1340, 1565, 1742, 3130, 3484, 3851, 4069, 4355, 6260, 7702, 8138, 8710, 15404, 16276, 17420, 19255, 20345, 20971, 38510, 40690, 41942, 50063, 77020, 81380, 83884, 100126, 104855, 200252, 209710, 250315, 258017, 272623, 419420, 500630, 516034, 545246, 1001260, 1032068, 1090492, 1205363, 1290085, 1363115, 2410726, 2580170, 2726230, 3354221, 4821452, 5160340, 5452460, 6026815, 6708442, 12053630, 13416884, 15669719, 16771105, 24107260, 31339438, 33542210, 62678876, 67084420, 78348595, 80759321, 156697190, 161518642, 313394380, 323037284, 403796605, 807593210, 1049871173, 1615186420, 2099742346, 4199484692, 5249355865, 10498711730, 20997423460]

約数ペア:

[(1, 20997423460), (2, 10498711730), (4, 5249355865), (5, 4199484692), (10, 2099742346), (13, 1615186420), (20, 1049871173), (26, 807593210), (52, 403796605), (65, 323037284), (67, 313394380), (130, 161518642), (134, 156697190), (260, 80759321), (268, 78348595), (313, 67084420), (335, 62678876), (626, 33542210), (670, 31339438), (871, 24107260), (1252, 16771105), (1340, 15669719), (1565, 13416884), (1742, 12053630), (3130, 6708442), (3484, 6026815), (3851, 5452460), (4069, 5160340), (4355, 4821452), (6260, 3354221), (7702, 2726230), (8138, 2580170), (8710, 2410726), (15404, 1363115), (16276, 1290085), (17420, 1205363), (19255, 1090492), (20345, 1032068), (20971, 1001260), (38510, 545246), (40690, 516034), (41942, 500630), (50063, 419420), (77020, 272623), (81380, 258017), (83884, 250315), (100126, 209710), (104855, 200252)]