20537820

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:612

約数の個数: 96

約数和(自身を含む): 64895040

約数和(自身を除く): 44357220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 73, 90, 108, 135, 146, 180, 219, 270, 292, 365, 438, 521, 540, 657, 730, 876, 1042, 1095, 1314, 1460, 1563, 1971, 2084, 2190, 2605, 2628, 3126, 3285, 3942, 4380, 4689, 5210, 6252, 6570, 7815, 7884, 9378, 9855, 10420, 13140, 14067, 15630, 18756, 19710, 23445, 28134, 31260, 38033, 39420, 46890, 56268, 70335, 76066, 93780, 114099, 140670, 152132, 190165, 228198, 281340, 342297, 380330, 456396, 570495, 684594, 760660, 1026891, 1140990, 1369188, 1711485, 2053782, 2281980, 3422970, 4107564, 5134455, 6845940, 10268910, 20537820]

約数ペア:

[(1, 20537820), (2, 10268910), (3, 6845940), (4, 5134455), (5, 4107564), (6, 3422970), (9, 2281980), (10, 2053782), (12, 1711485), (15, 1369188), (18, 1140990), (20, 1026891), (27, 760660), (30, 684594), (36, 570495), (45, 456396), (54, 380330), (60, 342297), (73, 281340), (90, 228198), (108, 190165), (135, 152132), (146, 140670), (180, 114099), (219, 93780), (270, 76066), (292, 70335), (365, 56268), (438, 46890), (521, 39420), (540, 38033), (657, 31260), (730, 28134), (876, 23445), (1042, 19710), (1095, 18756), (1314, 15630), (1460, 14067), (1563, 13140), (1971, 10420), (2084, 9855), (2190, 9378), (2605, 7884), (2628, 7815), (3126, 6570), (3285, 6252), (3942, 5210), (4380, 4689)]